Our major research areas include space science, condensed matter physics, nuclear physics, medical imaging, and string theory.

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Submissions from 2002

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Binding energies of neon and krypton cluster ions, Rajendra Parajuli, S. Matt, Olof Echt, Aleksandar Stamatovic, Paul Scheier, and Tilmann D. Mark

Submissions from 2001

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Investigation of magnetopause reconnection models using two colocated, low‐altitude satellites: A unifying reconnection geometry, A. Boudouridis, Harlan E. Spence, and T. G. Onsager

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MeV magnetosheath ions energized at the bow shock, S. Chang, J. D. Scudder, K. Kudela, Harlan E. Spence, J. F. Fennell, R. P. Lepping, R. P. Lin, and C. T. Russell

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Direct observation of misfit dislocation glide on surfaces, J. de la Figuera, Karsten Pohl, O. R. de la Fuente, A. K. Schmid, N. C. Bartelt, C. B. Carter, and R. Q. Hwang

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Determination of buried dislocation structures by scanning tunneling microscopy, J. de la Figuera, A. K. Schmid, N. C. Bartelt, Karsten Pohl, and R. Q. Hwang

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Electron and Ion High Resolution Interaction Studies Using Sector Field Mass Spectrometry: Propane, a Case Study, T. Fiegele, V. Grill, S. Matt, M. Lezius, G. Hanel, Michael Probst, Paul Scheier, K. Becker, H. Deutsch, Olof Echt, Aleksandar Stamatovic, and Tilmann D. Mark

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Charge exchange contribution to the decay of the ring current, measured by energetic neutral atoms (ENAs), A. M. Jorgensen, M. G. Henderson, E. C. Roelof, G. D. Reeves, and Harlan E. Spence

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Binding energy of C-60(+) revisited - What is the problem? , S. Matt, Olof E. Echt, P. Scheier, and T. D. Mark

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Electron Impact Ionization of Edge Plasma Constituents, S. Matt, T. Fiegele, G. Senn, Paul Scheier, K. Becker, H. Deutsch, Olof Echt, Aleksandar Stamatovic, and Tilmann D. Mark

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Decay reactions of rare gas cluster ions: kinetic energy release distributions and binding energies, R. Parajuli, S. Matt, Olof E. Echt, A. Stamatovic, P. Scheier, and T. D. Mark

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The Magnetospheric Mapping Mission, Harlan E. Spence

Submissions from 2000

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Surface-induced dissociation of singly and multiply charged fullerene ions , F. Biasioli, T. Fiegele, C. Mair, Z. Herman, Olof E. Echt, F. Aumayr, H. P. Winter, and T. D. Mark

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Absolute separation energies for Na clusters, J. Borggreen, K. Hansen, F. Chandezon, T. Dossing, M. Elhajal, and Olof E. Echt

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Energetic magnetosheath ions connected to the Earth's bow shock: Possible source of cusp energetic ions, S. W. Chang, J. D. Scudder, J. F. Fennell, R. Friedel, R. P. Lepping, C. T. Russell, K. J. Trattner, S. A. Fuselier, W. K. Peterson, and Harlan E. Spence

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Collisional Formation of Metallofullerenes, Rongping Deng, Rory MacCrimmon, and Olof Echt

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Surface-Induced Reactions of Singly and Multiply Charged Parent and Fragment Ions of C60, Olof Echt, T. Fiegele, F. Biasioli, C. Mair, Z. Herman, Paul Scheier, and Tilmann D. Mark

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Surface-Induced Reactions of Singly and Multiply Charged Parent and Fragment Ions of C60, T. Fiegele, F. Biasioli, C. Mair, Olof Echt, Z. Herman, Paul Scheier, Friedrich Aumayr, H. P. Winter, and Tilmann D. Mark

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Surface-Induced Reactions of Cn+ , 52 < n < 60, T. Fiegele, Olof Echt, F. Biasioli, C. Mair, and Tilmann D. Mark

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Polar CEPPAD/IPS energetic neutral atom (ENA) images of a substorm injection, M. G. Henderson, G. D. Reeves, A. M. Jorgensen, Harlan E. Spence, L. A. Frank, J. B. Sigwarth, J. F. Fennell, J. L. Roeder, J. B. Blake, K. Yumoto, and S. Bourdarie

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Association of energetic neutral atom bursts and magnetospheric substorms, A. M. Jorgensen, L. Kepko, M. G. Henderson, Harlan E. Spence, G. D. Reeves, J. B. Sigwarth, and L. A. Frank

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Kinetic energy release in electron-induced decay reactions of molecular ions: C3H8+ and C3H7+, S. Matt, Olof E. Echt, A. Stamatovic, and T. D. Mark

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The C60 Binding Energy: The Finale of a Long Story, S. Matt, Olof Echt, C. Lifshitz, Paul Scheier, and Tilmann D. Mark

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Kinetics and Energetics of Electron Impact Ionization of Molecules: Ionization Cross Section, Appearance Energies and Kinetic Energy Release, S. Matt, T. Fiegele, G. Hanel, D. Muigg, Stephan Denifl, K. Becker, H. Deutsch, Olof Echt, N. Mason, Aleksandar Stamatovic, Paul Scheier, and Tilmann D. Mark

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Novel Decay Channels of Carbon Cluster Ions, C40z+ and C41z+ (z = 3, 4), Rajendra Parajuli, Paul Scheier, V. Grill, S. Matt, Olof Echt, and Tilmann D. Mark

Submissions from 1999

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Magnetospheric constellation: Past, present and future, V. Angelopoulos and Harlan E. Spence

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Evaporation Rates for Na Clusters, J. Borggreen, F. Chandezon, Olof Echt, H. Grimley, Klavs Hansen, P. M. Hansen, and C. Ristori

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Cluster Ions Measured Using Mass Spectrometry, Olof Echt and Tilmann D. Mark

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Dayside open field line region boundary at high altitudes, J. F. Fennell, J. L. Roeder, R. Friedel, M. Grande, and Harlan E. Spence

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Cusp energetic particle events measured by POLAR spacecraft, T. A. Fritz, J. Chen, R. B. Sheldon, Harlan E. Spence, J. F. Fennell, S. Livi, C. T. Russell, and J. S. Pickett

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Thermionic Emission and Fragmentation of C60 - Reply to Comment by Stampfli and Märk, Klavs Hansen and Olof Echt

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Energetic neutral atom imaging with the Polar CEPPAD/IPS instrument: Initial forward modeling results, M. G. Henderson, G. D. Reeves, K. R. Moore, Harlan E. Spence, A. M. Jorgensen, J. F. Fennell, J. B. Blake, and E. C. Roelof

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A study of omega bands and Ps6 pulsations on the ground, at low altitude and at geostationary orbit, A. M. Jorgensen, Harlan E. Spence, T. J. Hughes, and D. McDiarmid

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Kinetic Energy Release Distributions and Evaporation Energies for Metastable Fullerene Ions, S. Matt, Olof Echt, M. Sonderegger, R. David, Paul Scheier, J. Laskin, C. Lifshitz, and Tilmann D. Mark

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Kinetic Energy Release for Metastable Fullerene Ions, S. Matt, M. Sonderegger, R. David, Olof Echt, Paul Scheier, J. Laskin, C. Lifshitz, and Tilmann D. Mark

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Constellation pathfinder: a university nanosatellite, C. D. Rayburn, Harlan E. Spence, H. E. Petschek, M. Bellino, J. Vickers, M. Murphy, N. Dennehy, D. Sargent, and M. Socha

Submissions from 1998

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Coronal mass ejections, magnetic clouds, and relativistic magnetospheric electron events: ISTP, D. N. Baker, T. I. Pulkkinen, X. Li, S. G. Kanekal, J. B. Blake, R. S. Selesnick, M. G. Henderson, G. D. Reeves, Harlan E. Spence, and G. Rostoker

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Cusp energetic ions: A bow shock source, S. W. Chang, J. D. Scudder, S. A. Fuselier, J. F. Fennell, K. J. Trattner, J. S. Pickett, Harlan E. Spence, J. D. Menietti, W. K. Peterson, R. P. Lepping, and R. Friedel

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Cusp energetic particle events: Implications for a major acceleration region of the magnetosphere, J. Chen, T. A. Fritz, R. B. Sheldon, Harlan E. Spence, W. N. Spjeldvik, J. F. Fennell, S. Livi, C. T. Russell, J. S. Pickett, and D. A. Gurnett

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Efficiency of Thermionic Emission from C60, Rongping Deng and Olof Echt

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Observation of 40 keV Field-Aligned Ion Beams, J. F. Fennell, R. B. Sheldon, and Harlan E. Spence

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Dissociation of Singly and Multiply Charged Fullerenes: Emission of C4, or Sequential Emission of C2?, M. Foltin, Olof Echt, B. Dunser, R. Worgotter, D. Muigg, S. Matt, and Tilmann D. Mark

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Trapping of Low-Energy Electrons at Preexisting, Cold Water Clusters, Martin Knapp, Olof Echt, Dietmar Kreisle, and Ekkehard Recknagel

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Mass Spectrometric Evidence for Icosahedral Structure of Large Rare Gas Clusters: Ar, Kr, Xe, Werner Miehle, Otto Kandler, Thomas Leisner, and Olof Echt

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High Resolution Electron Ionization Study of CO, (CO)2, and (CO)3: Appearance Energies and Bond Dissociation Energies, D. Muigg, Stephan Denifl, Aleksandar Stamatovic, Olof Echt, and Tilmann D. Mark

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AMPTE/CCE‐SCATHA simultaneous observations of substorm‐associated magnetic fluctuations, S. Ohtani, K. Takahashi, T. Higuchi, A. T. Y. Lui, Harlan E. Spence, and J. F. Fennell

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The Kilo-Satellite Constellation Concept, H. E. Petschek, C. Rayburn, R. Sheldon, J. Vickers, M. Bellino, G. Bevis, and Harlan E. Spence

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The global response of relativistic radiation belt electrons to the January 1997 magnetic cloud, G. D. Reeves, D. N. Baker, R. D. Belian, J. B. Blake, T. E. Cayton, J. F. Fennell, R. H.W. Friedel, M. M. Meier, R. S. Selesnick, and Harlan E. Spence

A new magnetic storm model, R. B. Sheldon and Harlan E. Spence

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The discovery of trapped energetic electrons in the outer cusp, R. B. Sheldon; Harlan E. Spence; J. D. Sullivan; T. A, Fritz; and Jiasheng Chen

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On the Physical Origin and Prediction of Killer Electron Storms, R. Sheldon, Harlan E. Spence, J. D. Sullivan, T. E. Fritz, and J. Chen

Implementation of the Boston University Space Physics Acquisition Center, Harlan E. Spence

Submissions from 1997

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Recurrent geomagnetic storms and relativistic electron enhancements in the outer magnetosphere: ISTP coordinated measurements, D. N. Baker, X. Li, N. Turner, J. H. Allen, L. F. Bargatze, J. B. Blake, R. B. Sheldon, Harlan E. Spence, R. D. Belian, G. D. Reeves, S. G. Kanekal, and B. Klecker

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ISTP: relativistic particle acceleration and global energy transport, D. N. Baker, Harlan E. Spence, and J. B. Blake

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A new, temporarily confined population in the polar cap during the August 27, 1996 geomagnetic field distortion period, Jiasheng Chen, Theodore A. Fritz, Robert B. Sheldon, Harlan E. Spence, Walther N. Spjeldvik, Joseph F. Fennell, and Stefano Livi

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Photoexcited C60: Fragmentation and Delayed Ionization, Rongping Deng, Geoffrey Littlefield, and Olof Echt

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Sequential Reaction Channels of Metastable C604+, B. Dunser, Olof Echt, Paul Scheier, and Tilmann D. Mark

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Tail lobe and open field line region entries at mid to high latitudes, J. F. Fennell, J. B. Blake, J. L. Roeder, R. Sheldon, and Harlan E. Spence

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First polar and 1995-034 observations of the midaltitude cusp during a persistent northward IMF condition, M. Grande, J. Fennell, S. Livi, B. Kellett, C. Perry, P. Anderson, J. Roeder, Harlan E. Spence, T. Fritz, and B. Wilken

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Thermionic Emission and Fragmentation of C60, Klavs Hansen and Olof Echt

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First energetic neutral atom images from Polar, M. G. Henderson, G. D. Reeves, Harlan E. Spence, R. B. Sheldon, A. M. Jorgensen, J. B. Blake, and J. F. Fennell

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On separating space and time variations of auroral precipitation: Dual DMSP-F6 and-F8 observations, A. M. Jorgensen and Harlan E. Spence

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Global energetic neutral atom (ENA) measurements and their association with the Dst index, A. M. Jorgensen, Harlan E. Spence, M. G. Henderson, G. D. Reeves, M. Sugiura, and T. Kamei

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Initial POLAR MFE observation of substorm signatures in the polar magnetosphere, H. Kawano, G. Le, C. T. Russell, G. Rostoker, T. Mukai, and Harlan E. Spence

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Electron Impact Ionization and Dissociation of Neutral and Ionized Fullerenes, S. Matt, Olof Echt, T. Rauth, B. Dunser, M. Lezius, Aleksandar Stamatovic, Paul Scheier, and Tilmann D. Mark

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Appearance and Ionization Energies of Multiply-Charged C70 Parent Ions Produced by Electron Impact Ionization, S. Matt, Olof Echt, R. Worgotter, V. Grill, Paul Scheier, C. Lifshitz, and Tilmann D. Mark

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Relative Dissociation Energies of Singly and Doubly Charged Fullerene Ions, S. Matt, Olof Echt, R. Worgotter, Paul Scheier, C. E. Klots, and Tilmann D. Mark

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Alfvén boundaries: noses and zippers, R. B. Sheldon and Harlan E. Spence

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First observations by the CEPPAD Imaging Proton Spectrometer aboard POLAR, Harlan E. Spence and J. B. Blake

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Towards inner magnetosphere particle and field models, Harlan E. Spence, A. M. Jorgensen, W. J. Hughes, J. F. Fennell, and J. L. Roeder

Submissions from 1996

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Search for gamma-ray emission from the Lagrangian points of PSR 1957+20, R Buccheri, V. Salamone, K Bennett, M Busetta, L Kuiper, W Hermsen, Mark L. McConnell, R Much, James M. Ryan, H Steinle, and V. Schonfelder

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COMPTEL observations of the Virgo region., W Collmar, K Bennett, H Bloemen, J J. Blom, W Hermsen, G G. Lichti, Mark L. McConnell, D Morris, V. Schonfelder, G Stacy, H Steinle, A W. Strong, and O R. Williams

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Convergence of Cluster Properties towards Bulk Behavior: How Large is Large?, Olof Echt

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First Direct Evidence for Sequential Metastable Decay of C60z+ - C58z+ + C2 - C56z+ + 2 C2 for z = 1, 2, 3, Olof Echt, B. Dunser, D. Muigg, S. Matt, Paul Scheier, and Tilmann D. Mark

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CRRES observations of particle flux dropout events, J. Fennell, J. Roeder, Harlan E. Spence, H. Singer, A. Korth, M. Grande, and A. Vampola

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Low altitude signatures of the plasma sheet: Model predictions of local time dependence, K. L. Hirsch, Harlan E. Spence, and T. G. Onsager

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The preliminary cosmic diffuse γ-ray spectrum from 800 keV to 30 MeV measured with COMPTEL, S C. Kappadath, James M. Ryan, K Bennett, H Bloemen, D J. Forrest, W Hermsen, R M. Kippen, Mark L. McConnell, V. Schonfelder, R Van Dijk, M Varendorff, G Weidenspointer, and C Winkler

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Gamma-Ray Observations of GRO J1655-40, R Kroeger, Mark Strickman, J E. Grove, Philip Kaaret, E. Ford, B A. Harmon, and Mark L. McConnell

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Large-area sub-millimeter resolution CdZnTe strip detector for astronomy, John R. Macri, Boris A. Apotovsky, J F. Butler, M L. Cherry, Brian K. Dann, F P. Doty, T G. Guzik, Mark L. McConnell, and James M. Ryan

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Development of an Orthogonal-Stripe CdZnTe Gamma Radiation Imaging Spectrometer, John R. Macri, Boris A. Apotovsky, J F. Butler, M L. Cherry, Brian K. Dann, A Drake, F P. Doty, T G. Guzik, K Larson, M Mayer, Mark L. McConnell, and James M. Ryan

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A search for galactic black hole candidates at MeV energies - preliminary results., Mark L. McConnell, K Bennett, H Bloemen, W Collmar, W Hermsen, R Much, James M. Ryan, V. Schonfelder, H Steinle, and A W. Strong

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Ground-based Gamma-Ray Burst Follow-up Efforts: Results of the First Two Years of the BATSE/COMPTEL/NMSU Rapid Response Network, B McNamara, T Harrison, James M. Ryan, R M. Kippen, Mark L. McConnell, John R. Macri, C Kouveliotou, Gerald J. Fishman, C Meegan, L O. Hanlon, K Bennett, T. A. Spoelstra, V. G. Metlov, N. V. Metlova, E. Feigelson, A. J. Beasley, D. M. Palmer, Scott Barthelmy, Dale E. Gary, E. T. Olsen, S. Levin, P. G. Wannier, M. A. Janssen, The MACHO Collaboration, J. Borovicka, P. Pravec, R. Hudec, and M. J. Coe

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The Crab total gamma-ray emission as seen by CGRO, R Much, B A. Harmon, P. Nolan, Mark Strickman, K Bennett, R Buccheri, R Diehl, J. M. Fierro, Gerald J. Fishman, D. A. Grabelsky, J E. Grove, W Hermsen, W. N. Johnson, G. V. Jung, R. L. Kinzer, R Kroeger, L Kuiper, J Kurfess, G G. Lichti, S M. Matz, Mark L. McConnell, W Paciesas, W. R. Purcell, James M. Ryan, V. Schonfelder, H Steinle, A W. Strong, D. J. Thompson, M. P. Ulmer, M Varendorff, C. A. Wilson, and Robert B. Wilson

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AMPTE/CCE and SCATHA simultaneous observations of magnetic signatures associated with a substorm onset, S. Ohtani, K. Takahashi, T. Higuchi, A. T. Y. Lui, and Harlan E. Spence

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Direct Evidence for the Sequential Decay C60z+-->C58z+-->C56z+ -->, Paul Scheier, B. Dunser, R. Worgotter, D. Muigg, S. Matt, Olof Echt, M. Foltin, and Tilmann D. Mark

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COMPTEL overview: Achievements and expectations., V. Schonfelder, K Bennett, H Bloemen, R Diehl, W Hermsen, G G. Lichti, Mark L. McConnell, James M. Ryan, A W. Strong, and C Winkler

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Geospace Environment Modeling Program flourishes, Harlan E. Spence

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The what, where, when, and why of magnetospheric substorm triggers, Harlan E. Spence

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The response of the CGRO COMPTEL determined from Monte Carlo simulation studies., J G. Stacy, R M. Kippen, S C. Kappadath, Mark L. McConnell, D Morris, R S. Miller, A Connors, B. Hersh, James M. Ryan, John R. Macri, G. Simpson, V. Schonfelder, H Steinle, R VanDijk, and O R. Williams

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Application of a Neural Network Simulation to the Modeling of the COMPTEL background, M Varendorff, D J. Forrest, Mark L. McConnell, and James M. Ryan

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Sequential C2 Evaporation from C60z+: Theoretical and Experimental Aspects, R. Worgotter, B. Dunser, Paul Scheier, Tilmann D. Mark, M. Foltin, C. E. Klots, J. Laskin, C. Lifshitz, and Olof Echt

Submissions from 1995

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CEPPAD, J. B. Blake, J. F. Fennell, L. M. Friesen, B. M. Johnson, W. A. Kolasinski, D. J. Mabry, J. V. Osborn, S. H. Penzin, E. R. Schnauss, Harlan E. Spence, D. N. Baker, and R. Belian

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COMPTEL gamma-ray observations of the quasars CTA 102 and 3C 454.3, J J. Blom, H Bloemen, K Bennett, W Collmar, W Hermsen, Mark L. McConnell, V. Schonfelder, J G. Stacy, H Steinle, A W. Strong, and C Winkler

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Evolution of Cluster Properties Towards Bulk Behavior, Olof Echt

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CATSAT - a very low cost burst distance measuring mission, D J. Forrest, W T. Vestrand, Mark L. McConnell, James M. Ryan, and A Owens

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Resonant Formation of Cluster Anions Containing SF6 Involving a Pick-up Experiment with Argon and Nitrogen Clusters, V. Grill, Olof Echt, and Tilmann D. Mark

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On the Efficiency of Delayed Electron Emission from C60, Keith W. Kennedy and Olof Echt

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Strong gamma-ray bursts observed by COMPTEL during its second year of operation, R M. Kippen, A Connors, Mark L. McConnell, James M. Ryan, W Collmar, J Greiner, V. Schonfelder, M Varendorff, W Hermsen, L Kuiper, K Bennett, L O. Hanlon, O R. Williams, and C Winkler

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Analysis of COMPTEL gamma-ray burst locations and spectra, R M. Kippen, James M. Ryan, A Connors, Mark L. McConnell, C Winkler, L O. Hanlon, V. Schonfelder, J Greiner, M Varendorff, W Collmar, W Hermsen, and L Kuiper

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Simultaneous and quasi-simultaneous observations of the continuum emission of the quasar 3C 273 from radio to γ-ray energies, G G. Lichti, T Balonek, T Courvoisier, N. Johnson, Mark L. McConnell, B McNamara, C Von Montigny, W Paciesas, E I. Robson, A Sadun, C Schalinski, R Staubert, H Steppe, B Swanenburg, M Turner, M Ulrich, O R. Williams, and A. G. Smith

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Upper limits on the MeV emission of Seyfert galaxies, M Maisack, W Collmar, P Barr, H Bloemen, W Hermsen, G G. Lichti, Mark L. McConnell, V. Schonfelder, J G. Stacy, H Steinle, and O R. Williams