Our major research areas include space science, condensed matter physics, nuclear physics, medical imaging, and string theory.
Faculty may submit research here.
Submissions from 1995
COMPTEL upper limits to MeV emission from the globular cluster 47 Tucanae, K. S. O'Flaherty, K Bennett, R Diehl, W Hermsen, Mark L. McConnell, James M. Ryan, V. Schonfelder, and C Winkler
Interaction of Electrons with C60+ and C60-: Post-Ionization, Dissociation, and Kinetic Energy Release, T. Rauth, Olof Echt, Paul Scheier, and Tilmann D. Mark
CGRO-COMPTEL observations of the Centaurus A region, H Steinle, K Bennett, H Bloemen, W Collmar, R Diehl, W Hermsen, G G. Lichti, Mark L. McConnell, D Morris, R Much, James M. Ryan, V. Schonfelder, A W. Strong, M Varendorff, and C Winkler
The black-hole candidate GRO J0422+32: MeV emission measured with COMPTEL., R Van Dijk, K Bennett, W Collmar, R Diehl, W Hermsen, G G. Lichti, Mark L. McConnell, James M. Ryan, V. Schonfelder, A W. Strong, J Van Paradijs, and C Winkler
COMPTEL observations of the quasars 3C 273 and 3C 279., O R. Williams, K Bennett, H Bloemen, W Collmar, R Diehl, W Hermsen, G G. Lichti, Mark L. McConnell, D Morris, R Much, James M. Ryan, V. Schonfelder, H Steinle, and A W. Strong
The detection of an unidentified variable gamma-ray source by COMPTEL., O R. Williams, R Much, K Bennett, H Bloemen, W Collmar, W Hermsen, G G. Lichti, Mark L. McConnell, James M. Ryan, V. Schonfelder, H Steinle, and C Winkler
Submissions from 1994
COMPTEL imaging of the Galactic disk and the separation of diffuse emission and point sources, H Bloemen, W Hermsen, B Swanenburg, C de Vries, R Diehl, V. Schonfelder, H Steinle, A W. Strong, A Connors, Mark L. McConnell, D Morris, G Stacy, K Bennett, and C Winkler
Multiply Charged Clusters, Olof Echt and Tilmann D. Mark
Crres observations of particle flux dropout events, J. F. Fennell, J. L. Roeder, Harlan E. Spence, H. Singer, and A. Korth
Observations of gamma-ray bursts by COMPTEL, L O. Hanlon, K Bennett, W Collmar, A Connors, R Diehl, R Van Dijk, J Greiner, J W. den Herder, W Hermsen, R M. Kippen, L Kuiper, Mark L. McConnell, James M. Ryan, V. Schonfelder, H Steinle, A W. Strong, M Varendorff, and C Winkler
Empirical modeling of the quiet time nightside magnetosphere, A. T. Y. Lui, Harlan E. Spence, and D. P. Stern
Internal Reactions and Metastable Dissociations after Ionization of van der Waals Clusters, Tilmann D. Mark and Olof Echt
Observations of Cygnus X-1 COMPTEL during 1991, Mark L. McConnell, D J. Forrest, James M. Ryan, W Collmar, V. Schonfelder, H Steinle, A W. Strong, R Van Dijk, W Hermsen, and K Bennett
COMPTEL measurements of the gamma-ray burst GRB 930131, James M. Ryan, K Bennett, W Collmar, A Connors, Gerald J. Fishman, J Greiner, L O. Hanlon, W Hermsen, R M. Kippen, C Kouveliotou, L Kuiper, G G. Lichti, John R. Macri, J. Mattox, Mark L. McConnell, B McNamara, C Meegan, V. Schonfelder, R VanDijk, M Varendorff, W Webber, and C Winkler
Submissions from 1993
Characteristics of ion flow in the quiet inner plasma sheet, V. Angelopoulos, C. F. Kennel, F. V. Coroniti, R. Pellat, Harlan E. Spence, Margaret G. Kivelson, Raymond J. Walker, W. Baumjohann, W. C. Feldman, J. T. Gosling, and C. T. Russell
COMPTEL observations of the Crab and VELA pulsars, K Bennett, H Aarts, H Bloemen, R Buccheri, M Busetta, W Collmar, A Connors, A Carramiñana, R Diehl, H deBoer, J W. den Herder, W Hermsen, L Kuiper, J Lockwood, G G. Lichti, John R. Macri, Mark L. McConnell, D Morris, R Much, James M. Ryan, V. Schonfelder, G. Simpson, J G. Stacy, H Steinle, A W. Strong, B Swanenburg, B G. Taylor, M Varendorff, C de Vries, W Webber, and C Winkler
COMPTEL observations of gamma-ray bursts, A Connors, W Collmar, L O. Hanlon, W Hermsen, R M. Kippen, Mark L. McConnell, James M. Ryan, V. Schonfelder, M Varendorff, O R. Williams, and C Winkler
COMPTEL results on the 1.809 MeV gamma-ray line from the Galactic-center region, R Diehl, K Bennett, H Bloemen, W Collmar, W Hermsen, G G. Lichti, Mark L. McConnell, D Morris, James M. Ryan, V. Schonfelder, H Steinle, A W. Strong, B Swanenburg, M Varendorff, and C Winkler
First results from COMPTEL measurement of the Al-26 1.8 MeV gamma-ray line from the Galactic center region, R Diehl, K Bennett, H Bloemen, H deBoer, M Busetta, W Collmar, A Connors, J W. den Herder, C. deVries, W Hermsen, J Knodlseder, L Kuiper, G G. Lichti, J Lockwood, John R. Macri, Mark L. McConnell, D Morris, R Much, James M. Ryan, V. Schonfelder, G. Simpson, J G. Stacy, H Steinle, A W. Strong, B Swanenburg, M Varendorff, P. von Ballmoos, W Webber, and C Winkler
COMPTEL Observations of the 1.809 MeV Gamma-Ray Line from Galactic 26Al, R Diehl, C. Dupraz, K Bennett, H Bloemen, H deBoer, W Hermsen, G G. Lichti, Mark L. McConnell, D Morris, James M. Ryan, V. Schonfelder, H Steinle, A W. Strong, B Swanenburg, M Varendorff, and C Winkler
COMPTEL detections of the quasars 3C 273 and 3C 279, W Hermsen, H Aarts, K Bennett, H Bloemen, H deBoer, W Collmar, A Connors, R Diehl, R VanDijk, J W. den Herder, L Kuiper, G G. Lichti, J Lockwood, John R. Macri, Mark L. McConnell, D Morris, James M. Ryan, V. Schonfelder, G. Simpson, H Steinle, A W. Strong, B Swanenburg, C de Vries, W Webber, O R. Williams, and C Winkler
Delayed electron emission from higher fullerenes Cn, n .ltoreq. 96, following excitation at 1064 nm, Keith W. Kennedy and Olof Echt
Thermionic Emission from Free, Photoexcited Tungsten Clusters, Thomas Leisner, Kalliopi Athanassenas, Dietmar Kreisle, Ekkehard Recknagel, and Olof Echt
Preliminary results from COMPTEL on a search for gamma-ray line emission from SN 1991T, G G. Lichti, K Bennett, H Bloemen, H deBoer, M Busetta, W Collmar, A Connors, R Diehl, R Van Dijk, J W. den Herder, W Hermsen, L Kuiper, J Lockwood, John R. Macri, Mark L. McConnell, D Morris, R Much, James M. Ryan, V. Schonfelder, G. Simpson, J G. Stacy, H Steinle, A W. Strong, B Swanenburg, M Varendorff, C de Vries, and C Winkler
Comptel observations of solar flare gamma-rays, Mark L. McConnell, K Bennett, D J. Forrest, L O. Hanlon, James M. Ryan, V. Schonfelder, B Swanenburg, and C Winkler
Neutron Flux Measurements in Near-Earth Orbit with COMPTEL, D Morris, H. Aarts, K Bennett, R. Byrd, G. Eymann, J Lockwood, Mark L. McConnell, James M. Ryan, and H Steinle
Production of Non-Stoichiometric SF6 Cluster Anions by Electron Attachment to SF6 Clusters, T. Rauth, Olof Echt, and Tilmann D. Mark
Comptel measurements of solar flare neutrons, James M. Ryan, K Bennett, H Debrunner, D J. Forrest, J Lockwood, M Loomis, Mark L. McConnell, D Morris, V. Schonfelder, B Swanenburg, and W Webber
Initial results from COMPTEL onboard GRO, V. Schonfelder, K Bennett, H Bloemen, H deBoer, M Busetta, W Collmar, A Connors, R Diehl, J W. den Herder, W Hermsen, L Kuiper, G G. Lichti, J Lockwood, John R. Macri, Mark L. McConnell, D Morris, R Much, James M. Ryan, J G. Stacy, H Steinle, A W. Strong, B Swanenburg, M Varendorff, C de Vries, and C Winkler
Surface charging analysis of high-inclination, high-altitude spacecraft: Identification and physics of the plasma source region, Harlan E. Spence, J. B. Blake, and J. F. Fennell
Contributions of the low-latitude boundary layer to the finite width magnetotail convection model, Harlan E. Spence and M. G. Kivelson
COMPTEL OBSERVATIONS OF AGNs, H Steinle, H Bloemen, W Collmar, R Diehl, W Hermsen, G G. Lichti, Mark L. McConnell, James M. Ryan, V. Schonfelder, G Stacy, A W. Strong, B Swanenburg, M Varendorff, and O R. Williams
The Crab and Galactic anticentre region observed by COMPTEL, A W. Strong, K Bennett, H Bloemen, H deBoer, R Buccheri, M Busetta, W Collmar, A Connors, R Diehl, J W. den Herder, W Hermsen, L Kuiper, J Lockwood, G G. Lichti, John R. Macri, Mark L. McConnell, D Morris, R Much, James M. Ryan, V. Schonfelder, G. Simpson, J G. Stacy, H Steinle, B Swanenburg, M Varendorff, C Winkler, and C de Vries
Thermionic Emission from Fullerenes, Gerhard Walder, Keith W. Kennedy, and Olof Echt
Space-time structure of the morning aurora inferred from coincident DMSP-F6,-F8, and Søndrestrøm incoherent scatter radar observations, J. Watermann, O. De la Beaujardiere, and Harlan E. Spence
Submissions from 1992
Thermionic Emission of Free Niobium Clusters, Kalliopi Athanassenas, Thomas Leisner, U. Frenzel, H. Weidele, Olof Echt, Dietmar Kreisle, and Ekkehard Recknagel
Multiply Charged Atomic Clusters, Olof Echt
Metal Clusters: How Many Atoms are Required for Thermionic Emission?, Thomas Leisner, Kalliopi Athanassenas, Olof Echt, Dietmar Kreisle, and Ekkehard Recknagel
Thermionic Emission of Free Tantalum Clusters, Thomas Leisner, Kalliopi Athanassenas, Olof Echt, Dietmar Kreisle, and Ekkehard Recknagel
Substorm aurorae and their connection to the inner magnetosphere, R. E. Lopez, C. I. Meng, and Harlan E. Spence
Gamma-Ray Emission from CYGNUS-X-1 - Emission Mechanisms and Implications for the Standard Model, A Owens and Mark L. McConnell
On the standing wave mode of giant pulsations, K. Takahashi, N. Sato, J. Warnecke, H. Luhr, Harlan E. Spence, and Y. Tonegawa
Thermionic Emission from Fullerenes, Gerhard Walder and Olof Echt
The gamma-ray burst of 3 May 1991 observed by COMPTEL on board GRO, C Winkler, K Bennett, H Bloemen, W Collmar, A Connors, R Diehl, J W. den Herder, W Hermsen, R M. Kippen, L Kuiper, G G. Lichti, J Lockwood, Mark L. McConnell, D Morris, James M. Ryan, V. Schonfelder, J G. Stacy, H Steinle, A W. Strong, B Swanenburg, B G. Taylor, M Varendorff, and C de Vries
Submissions from 1991
The Influence of Shells, Electron Thermodynamics, and Evaporation on the Abundance Spectra of Large Sodium Metal Clusters, S. Bjornholm, J. Borggreen, Olof Echt, Klavs Hansen, J. Pedersen, and H. D. Rasmussen
Electronic Shell Structure in Multiply Charged Silver Clusters, Otto Kandler, Kalliopi Athanassenas, Olof Echt, Dietmar Kreisle, Thomas Leisner, and Ekkehard Recknagel
Hot Tungsten Clusters: Competition between Atom Ejection and Thermionic Emission, Thomas Leisner, Kalliopi Athanassenas, Olof Echt, Otto Kandler, Dietmar Kreisle, and Ekkehard Recknagel
Thermionic Emission from Hot Tungsten Clusters, Thomas Leisner, Kalliopi Athanassenas, Otto Kandler, Dietmar Kreisle, Ekkehard Recknagel, and Olof Echt
DMSP F7 observations of a substorm field‐aligned current, R. E. Lopez, Harlan E. Spence, and C. Meng
Simultaneous observations of the westward electrojet and the cross-tail current sheet during substorms, R. E. Lopez, Harlan E. Spence, and C. Meng
ULF waves in the low‐latitude boundary layer and their relationship to magnetospheric pulsations: A multisatellite observation, K. Takahashi, D. G. Sibeck, P. T. Newell, and Harlan E. Spence
Submissions from 1990
Stability of Doubly Charged Transition-Metal Clusters, Kalliopi Athanassenas, Thomas Leisner, Otto Kandler, Olof Echt, Dietmar Kreisle, and Ekkehard Recknagel
Mean Field Quantization of Several Hundred Electrons in Sodium Metal Clusters, S. Bjornholm, J. Borggreen, Olof Echt, Klavs Hansen, J. Pedersen, and H. D. Rasmussen
Magic Numbers in Mass Spectra of Large van der Waals Clusters, Olof Echt, Otto Kandler, Thomas Leisner, Werner Miehle, and Ekkehard Recknagel
Variation of the plasma-sheet polytropic index along the midnight meridian in a finite-width magnetotail, Harlan E. Spence and M. G. Kivelson
Submissions from 1989
The Physics of Small Clusters: Recent Advances in the Theoretical and Experimental Approach, Wanda Andreoni and Olof Echt
A balloon-borne coded aperture telescope for low-energy gamma-ray astronomy, P. P. Dunphy, Mark L. McConnell, A Owens, E. L. Chupp, D J. Forrest, and Jonathan Googins
A Novel Method for Analysis of Delayed Decomposition by Time-of-Flight Mass Spectrometry, Thomas Leisner, Olof Echt, Otto Kandler, and Ekkehard Recknagel
Quantized Losses from Charged Nitrogen Clusters, Thomas Leisner, Olof Echt, Otto Kandler, Xue-Jian Yan, and Ekkehard Recknagel
Gamma-ray observations of Cygnus X-1 and Cygnus X-3 using a coded-aperture telescope, Mark L. McConnell, D J. Forrest, A Owens, P. P. Dunphy, W T. Vestrand, and E. L. Chupp
Magic Numbers of Large Rare Gas Clusters, Werner Miehle, Olof Echt, Otto Kandler, Thomas Leisner, and Ekkehard Recknagel
On the large-scale distribution of magnetospheric currents and thermal plasma: Results from magnetic field models and observations, Harlan E. Spence
Magnetospheric plasma pressures in the midnight meridian: Observations from 2.5 to 35 RE, Harlan E. Spence, M. G. Kivelson, R. J. Walker, and D. J. McComas
Submissions from 1988
Production and Stability of Multiply Charged Clusters, Olof Echt
Van der Waals Clusters: Metastable Decay, Coulomb Explosion, and Electron Attachment, Olof Echt
Dissociation Channels of Multiply Charged van der Waals Clusters, Olof Echt, Dietmar Kreisle, Ekkehard Recknagel, J. J. Saenz, R. Casero, and J. M. Soler
Carbon Monoxide Clusters: Critical Size and Magic Numbers, Otto Kandler, Thomas Leisner, Olof Echt, and Ekkehard Recknagel
On the possibility of quasi-static convection in the quiet magnetotail, Margaret G. Kivelson and Harlan E. Spence
Quantum Effects in the Decomposition of Nitrogen Clusters, Thomas Leisner, Olof Echt, Otto Kandler, Xue-Jian Yan, and Ekkehard Recknagel
Comparison of field-aligned currents at ionospheric and magnetospheric altitudes, Harlan E. Spence, M. G. Kivelson, and R. J. Walker
Submissions from 1987
Experiments on Clusters, Olof Echt
Multiply Charged Clusters, Olof Echt
Krypton Dimers: Resonance-Enhanced MPI via Gerade States in the Region of Atomic 4p55p Configurations, Olof Echt, C. Cook, and A. W. Castleman Jr.
Multiphoton Ionization Studies of Xenon Clusters, Olof Echt, C. Cook, and A. W. Castleman Jr.
Electron Attachment to Clusters, Olof Echt, Martin Knapp, C. Schwarz, and Ekkehard Recknagel
Electron Attachment to van der Waals Clusters, in Physics and Chemistry of Small Clusters, Martin Knapp, Olof Echt, Dietmar Kreisle, Tilmann D. Mark, and Ekkehard Recknagel
Electron Attachment to Water Clusters under Collision-Free Conditions, Martin Knapp, Olof Echt, Dietmar Kreisle, and Ekkehard Recknagel
Dissociation Channels of van-der-Waals Cluster Ions, Thomas Leisner, Olof Echt, Otto Kandler, Dietmar Kreisle, and Ekkehard Recknagel
Metastable Dissociation of Doubly Charged CO2 Cluster Ions, K. Leiter, Dietmar Kreisle, Olof Echt, and Tilmann D. Mark
Gamma-ray observations of the Crab Region using a coded-aperture telescope, Mark L. McConnell, P. P. Dunphy, D J. Forrest, E. L. Chupp, and A Owens
Electric-field-gradient tensor orientation for As and Ge atoms in α-gallium, M. Menningen, H. Haas, Olof Echt, E. A. Ivanov, Ekkehard Recknagel, and H. Rinneberg
Static magnetic field models consistent with nearly isotropic plasma pressure, Harlan E. Spence, Margaret G. Kivelson, and Raymond J. Walker
Submissions from 1986
Formation and Decay of Negatively and Positively Charged Clusters, Olof Echt
Formation of Long-Lived CO2-, N2O-, and their Dimer Anions, by Electron Attachment to van der Waals Clusters, Martin Knapp, Olof Echt, Tilmann D. Mark, and Ekkehard Recknagel
Dissociation of Cluster Ions, Dietmar Kreisle, Olof Echt, Martin Knapp, and Ekkehard Recknagel
Time-Dependent Size Distribution of Xenon-Cluster Ions, Dietmar Kreisle, Olof Echt, Martin Knapp, and Ekkehard Recknagel
Dissociation Channels for Multiply Charged Clusters, Dietmar Kreisle, Olof Echt, Martin Knapp, Ekkehard Recknagel, K. Leiter, Tilmann D. Mark, J. J. Saenz, and J. M. Soler
Decomposition channels for multiply charged ammonia clusters, Dietmar Kreisle, K. Leiter, Olof Echt, and Tilmann D. Mark
Dissociation Channels of Multiply Charged Cluster Ions, Dietmar Kreisle, K. Leiter, Olof Echt, and Tilmann D. Mark
The average magnetic field draping and consistent plasma properties of the Venus magnetotail, David J. McComas, Harlan E. Spence, C. T. Russell, and M. A. Saunders
Submissions from 1985
Studies of the Dynamics and Properties of Clusters, A. W. Castleman Jr., P. Di Dao, Olof Echt, S. Morgan, J. J. Breen, K. Kilgore, and R. G. Keesee
Unimolecular Dissociation of Cluster Ions Following Multiphoton Ionization and Subsequent Proton Transfer Reaction, A. W. Castleman Jr., Olof Echt, S. Morgan, P. Di Dao, and R. J. Stanley
Comment on "The Observability of Multiply Charged (Metal) Clusters", Olof Echt
Multiphoton Ionization of Ammonia Clusters and the Dissociation Dynamics of Protonated Cluster Ions, Olof Echt, P. Di Dao, S. Morgan, and A. W. Castleman Jr.
Multiphoton Ionization of (NH3)n and Unimolecular Dissociation of Ammonia Cluster Ions, Olof Echt, P. Di Dao, S. Morgan, and A. W. Castleman Jr.
Electron Attachment to Neutral Clusters, Martin Knapp, Olof Echt, Dietmar Kreisle, K. Sattler, and Ekkehard Recknagel
Size Distributions of Negatively and Positively Charged Clusters: CO2 and N2O, Martin Knapp, Dietmar Kreisle, Olof Echt, K. Sattler, and Ekkehard Recknagel
Dissociation of Xenon Cluster Ions, Dietmar Kreisle, Olof Echt, Martin Knapp, and Ekkehard Recknagel
Evolution of Magic Numbers in Mass Spectra of Clusters after Ionization, Dietmar Kreisle, Olof Echt, Martin Knapp, and Ekkehard Recknagel
Simulation studies of ionospheric airglow signatures of plasma depletions at the equator, Michael Mendillo, Harlan E. Spence, and S. T. Zalesak