UC San Diego: Department of Physics - Surko Plasma Research Group

E. V. Stenson, S. Nißl, U. Hergenhahn, J. Horn-Stanja, M. Singer, H. Saitoh, T. Sunn Pedersen, J. R. Danielson, M. R. Stoneking, M. Dickmann and C. Hugenschmidt New

"Confinement of Positrons Exceeding 1 s in a Supported Magnetic Dipole Trap," Phys. Rev. Lett. 121, 235005 (2018)

J. Horn-Stanja, S. Nißl, U. Hergenhahn, T. Sunn Pedersen, H. Saitoh, E. V. Stenson, M. Dickmann, C. Hugenschmidt, M. Singer, M. R. Stoneking and J. R. Danielson New

"Progress of the APEX Experiment for Creation of an Electron-Positron Pair Plasma," Proceedings of the 12th International Workshop on Nonneutral Plasma Physics, M. R. Stoneking, ed. AIP Conf. Proc. 1928, 2018), 020004, 1-11.

U. Hergenhahn, J. H. Stanja, T. S. Pedersen, H. Saitoh, E. V. Stenseon, M. R. Stoneking, M. Dickmann, C. Hugenschmidt, M. Singer, J. R. Danielson, and C. M. Surko New

"Manipulation of Positron Orbits in a Dipole Magnetic Field with Rotating Electric Fields," Proceedings of the 12th International Workshop on Nonneutral Plasma Physics, M. R. Stoneking, ed. AIP Conf. Proc. 1928, 2018), 020015, 1-6.

H. Saitoh, J. H. Stanja, S. Nisl, E. V. Stenson, U. Hergenhahn, T. S. Pedersen, M. Singer, M. Dickmann, C. Hugenschmidt, M. R. Stoneking, J. R. Danielson, and C. M. Surko New

"Toward a Compact levitated Superconducting Dipole for Positron-electron Plasma Confinement," ( AIP Conference Proceedings 1928, 2018), 020015, 1-6.

M. R. Stoneking, H. Saitoh, M. Singer, E. V. Stenson, J. Horn-Stanja, T. Sunn Pedersen, S. Nißl, U. Hergenhahn, N. Yanagi, C. Hugenschmidt, M. Dickmann, J. R. Danielson, and C. M. Surko New

"Plans for the creation and studies of electron-positron plasmas in a stellarator" New Journal of Physics 14, 2012

T Sunn Pedersen, J R Danielson, C Hugenschmidt, G Marx, X Sarasola, F Schauer, L Schweikhard, C. M. Surko, and E Winkler

"Practical Limits on Positron Accumulation and the Creation of Electron-Positron Plasmas" Nonneutral Plasma Physics IV F. Anderegg, L.Scweikhard, C.F. Driscoll, eds., (AIP Conf. Proc. #606, AIP Press, Melville NY, 2002), pp. 10-23.

R. G. Greaves and C. M. Surko

"Positron deposition in plasmas by positronium beam ionization and transport of positrons in tokamak plasmas" Plasma Physics and Controlled Fusion 29 (1987), pp.549-63.

T. J. Murphy

"Use of positrons to study transport in tokamak plasmas" Rev. of Scientific Inst. 57 (1986), pp. 1862-7.

C. M. Surko, M. Leventhal, W. S. Crane, A. Passner, and F. Wysocki

"The use of positrons to study transport in tokamak plasmas" Turbulence and Anomalous Transport in Magnetized Plasmas, edited by D. Gresillon and M. A. Dubois (Ecole Polytech, Palaiseau, France, 1986), p. 327-8.

C. M. Surko, M. Leventhal, W. S. Crane, A. Passner, F. J. Wysocki, T. J. Murphy, J. Strachan, and W. L. Rowan

Publications

Summary and Review

"Traps and Trap-Based Beams — New Tools for Positron Science,” tutorial lecture at the positron school, International Conference on Positron Annihilation, Orlando FL, August 19, 2018.

"Plasma and trap-based techniques for science with positrons" Rev. Mod. Phys. 87, 247 (2015).

"Accumulation, storage and manipulation of large numbers of positrons in traps I – the basics, Chapter 4 in Physics with Trapped Charged Particles" (Imperial College Press, 2014), pp. 83 – 128.

"Accumulation, storage and manipulation of large numbers of positrons in traps II – selected topics, Chapter 5 in Physics with Trapped Charged Particles" M. Knoop, Niels Madsen, R. C. Thompson, eds. (Imperial College Press, 2014), pp. 129 – 172.

"Antimatter Plasmas" Maxwell Prize talk, APS DPP meeting, New Orleans, LA, Oct. 30, 2014.

"Anti-Atoms Gotcha!" Nature Physics, Vol. 7, Jul. 2011, pg 521.

"Accumulation, Storage and Manipulation of Large Numbers of Positrons in Traps I. The Basics," in Physics with Many Positrons, R. S. Brusa, A. Dupasquier and A. P. Mills, Jr., eds. (IOS Press, Amserdam, 2010), pp. 511 - 543.

"Accumulation, Storage and Manipulation of Large Numbers of Positrons in Traps II. Selected Topics,"in Physics with Many Positrons , R. S. Brusa, A. Dupasquier and A. P. Mills, Jr., eds. (IOS Press, Amserdam, 2010)., pp. 545 - 574.

"Positron-molecule Interactions: Resonant Attachment, Annihilation, and Bound States"Reviews of Modern Physics, Rev. Mod. Phys. 82, 2577 - 2607 (2010).

"New Plasma Tools for Antimatter Science" Workshop on Cold Antimatter Plasmas and Application to Fundamental Physics, Y. Kanai and Y. Yamazaki, Eds., AIP Conf. Proc. No. 1037 (AIP, New York, 2008), pp. 84-95.

"A whiff of antimatter soup" bNews and Views Nature 449 Sept. 2007, 153-154

"Positron atomic physics – A look to the future" NIM B 247 (2006) 1-4

"The buffer-gas positron accumulator and resonances in positron-molecule interactions" (Written in conjunction with the symposium honoring the retirement of D. Drachman and A. Temkin)NASA Conference Publication Service , A. Bhatia, ed. (NASA Goddard SFC, Greenbelt, MD, 2006).

"Low - energy positron interactions with atoms and molecules" Journal of Physics B 38 (2005) R57-R126

Popular article about positron annihilation with matter "When antimatter attacks," New Scientist April 24, 2004 p 34

"Experimental studies of the interaction of low energy positrons with atoms and molecules" NIM B 221 (2004), 84-92

"Emerging science and technology of antimatter plasmas and trap-based beams"Physics of Plasmas 11 (2004) 2333-2348

"Low energy positron scattering and annihilation studies using a high-resolution trap-based beam"NIM B 192 (2002), 3-16.

"Atomic and Molecular Physics Using Positron Traps and Trap-Based Beams"New Directions in Antimatter Chemistry and Physics C. M. Surko and F. A. Gianturco, eds. (Kluwer Scientific Publishers, The Netherlands, 2001), pp. 345 - 366.

"Atomic and Molecular Physics Using Positron Accumluation Techniques --Summary and a Look to the Future" NIM B171(2000), pp. 2-16.

"Technological Applications of Trapped Positrons" Non-neutral Plasmas III J. Bollinger, R. Spencer and R. Davidson Eds., AIP Conf. Proc. No. 498,(AIP, New York, 1999), pp. 19-28.

"Progress in Creating Low-Energy Positron Plasma and Beams"Proc. of Conf. on Nonneutral Plasmas J. Bollinger, R. Spencer and R. Davidson Eds., AIP Conf. Proc. No. 498,(AIP, New York, 1999), pp. 3

"Antimatter plasmas and antihydrogen" Physics of Plasma 4 (1997), pp. 1528-43.

"Atomic and Molecular Physics using Positrons in a Penning Trap" Photonic, Electronic and Atomic Collisions F.Ayumayr and H.P. Winters, eds. (World Scientifc, 1997), pp. 383-392.

Positrons Annihilation

"Mode Coupling and Multiquantum Vibrational Excitations in Feshbach-resonant Positron Annihilation in Molecules," Phys. Rev. A, 96, 062709 (2017).

"Vibrational Feshbach Resonances Mediated by Nondipole Positron-Molecule Interactions," Phys. Rev. Lett., 119, 113402 (2017).

"Modeling Enhancement and Suppression of Vibrational Feshbach Resonances in Positron Annihilation on Molecules" Phys. Rev., A88, 062702 (2013).

"Role of Vibrational Dynamics in Resonant Positron Annihilation on Molecules" Phys. Rev. Lett., 110, 223201 (2013).

"Comparisons of Positron and Electron Binding to Molecules" Phys. Rev. Lett., 109, 11301 (2012).

"Effects of quantum chemistry models for bound electrons on positron annihilation spectra for atoms and small molecules" New J. Phys., 14, 085022 (2012).

"Measuring positron-atom binding energies through laser-assisted photo-recombination" New J. Phys., 14, 065004 (2012).

"Chemical structural effects on x-ray spectra of positron annihilation in fluorobenzenes" European. J. Phys. D, 66, 107 (2012).

"Effect of positron-atom interactions on the annihilation gamma spectra of molecules" New J. Phys. 14, 035021 (2012).

"Ubiquitous Nature of Multimode Vibrational Resonances in Positron-Molecule Annihilation" Phys. Rev. Lett., 108, 093201 (2012).

"Interplay between permanent dipole moments and polarizability in positron-molecule binding" Phys. Rev. A 85, 022709 (2012).

"Positron-molecule Interactions: Resonant Attachment, Annihilation, and Bound States" , Rev. Mod. Phys. 82, 2577 - 2607 (2010).

Electron Shell Contributions to Gamma-ray Spectra of Positron Annihilation in Noble gases" J. Phys. B.: Atomic, Molecular and Optical Physics, 43, 165207 (2010).

"Dipole Enhancement of Positron Binding to Molecules" Phys. Rev. Lett., 104, 233201 (2010).

"Dependance of positron-molecule binding energies on molecular properties" J. Phys. B: At. Mol. Opt. Phys. 42, 235203 (2009)

"Analysis of experimental positron-molecule binding energies" J. Phys. Conf. Series , 199, 012012 (2010)

"Positron attachment to molecules" Phys. Status Solidi C 6, 2265 (2009)

Resonant Positron Annihilation on Molecules"Materials Science Forum 607, 9 (2009)"

"Role of combination vibrations in resonant positron annihilation" Phys. Rev. A 77, 060702(R) (2008)

"Vibrational Feshbach resonance mediated positron annihilation in small molecules" Phys. Rev. A 78, 032702 (2008)

"Feshbach-resonance-mediated annihilation in positron interactions with large molecules" Phys. Rev. A 77, 052704 (2008)

"Dependence of Resonant Positron-molecule Annihilation on Molecular Temperature" Nuc. Inst. and Meth. B 266, 478 (2008)

Energy resolved annihilation studies: Vibrational Feshbach resonance and positron-molecule bound states, Ph.D. thesis, University of California, San Diego, 2007 (unpublished).

"Role of binding energy in Feshbach-resonant positron-molecule annihilation"Phys. Rev. Lett. 99 (2007), 133201

"Energy-resolved positron annihilation rates for molecules" Phys. Rev A 74 (2006), 012706

Positron annihilation on atoms and molecules, Ph.D. thesis, University of California, San Diego, 2005 (unpublished).

"Positron Scattering and Annihilation Studies Using a Trap-Based Beam" Physica Scripta T110 (2004),280-285

"Scattering and Annihilation Experiments Using a Trap-Based Beam" Materials Science Forum 445 (2004),435

"Energy-resolved positron annihilation for molecules" Phys. Rev A 67 (2003),032706

"Vibrational-Resonance Enhancement of Positron Annihilation in Molecules" Phys. Rev. Lett., 88 (2002),

"Positron Annihilation on Large Molecules" Phys. Rev. A, 61 (2000), 022719

Positron annihilation on atoms and molecules, Ph.D. thesis, University of California, San Diego, 1997 (unpubished).

"Studies of positron-matter interactions using stored positrons in an electrostatic trap" (Positron Annihilation, ICPA-11. 11th International Conference, Kansas City, MO, USA, May 1997). Materials Science Forum, 255-257, pp. 223-7.

"Positron annihilation with inner-shell electrons in noble gas atoms" Phys. Rev. Lett. 79 (1997), pp. 39-42.

"Gamma-ray spectra from positron annihilation on atoms and molecules" Phys. Rev. A 55 (1997), pp. 3586-3604.

"Temperature dependence of positron annihilation rates in noble gases" Phys. Rev. Lett. 77 (1997), pp. 2929-32.

"Positron annihilation in a simulated interstellar medium" Canadian Journal of Physics 74 (1996), pp. 407-10.

"Annihilation in low-energy positron-helium scattering" J. of Phys. B 29 (1996), pp. L465-71.

"Measurements of positron-annihilation rates on molecules" Phys. Rev. A 51 (1995), pp. 473-87.

"Annihilation rates of positrons on aromatic molecules" Hyperfine Interactions 89 (1994), pp. 271-8.

"Use of traps to study positron annihilation in astrophysically relevant media" Hyperfine Interactions 81 (1993), pp. 239-52.

"Annihilation of Positrons on Large Molecules" in Electronic and Atomic Collisions (Adam Hilger Publishing, Bristol, England, 1992), pp. 623-630.

"Annihilation gamma-ray spectra from positron-molecule interactions" Phys. Rev. Lett. 68 (1992), pp. 3793-6.

"Annihilation of positrons in xenon gas" J. of Phys. B, 23 (1990), pp. 727-32.

"Annihilation of positrons on organic molecules" Phys. Rev. Lett. 67 (1991), pp. 2954-7.

"Bound states of positrons and large molecules" Phys. Rev. Lett., 61 (1988), pp. 1831-4.

Positron Scattering

"High resolution cross section measurements using a trap based positron (electron) beam" 23rd Summer School and International Symposium on the Physics of Ionized Gases, L. Hadzievski, B. Marinkovic, N. Simonovic, Eds., AIP Conf. Proc. No. 876 (AIP, New York, 2006), pp. 125-131.

"Differential cross sections for positron-xenon elastic scattering"Phys. Rev. A 73 (2006) 064702.

"Comparison of positron -impact vibrational excitation cross sections with the Born-dipole model" NIM B 247 (2006) 87-91.

"Positron-impact ionization, positronium formation, and electronic excitation cross sections for diatomic molecules" Phys. Rev. A 72 (2005), 062713.

"Systematic comparison of positron- and electron-impact excitation of the nu(3) vibrational mode of CF4" Phys. Rev. A 72 (2005), 062702.

New Results for Positron Scattering from Noble Gas Atoms and Diatomic Molecules, Ph.D. thesis, University of California, San Diego, 2005 (unpublished).

"Progress in Creating Low-Energy Positron Plasma and Beams"
Proc. of Conf. on Nonneutral Plasmas J. Bollinger, R. Spencer and R. Davidson Eds., AIP Conf. Proc. No. 498,(AIP, New York, 1999), pp. 3

"Role of binding energy in Feshbach-resonant positron-molecule annihilation"
Phys. Rev. Lett. 99 (2007), 133201

"Excitation of Electronic States of Ar, H₂ and N₂ by Positron Impact" Phys. Rev. Lett. 87 (2001).

"Electrostatic Beams from a tailored plasma in a Penning-Malmberg Trap"
Phys. Plasmas 17, 123507 (2010)

"Energy spectra of tailored particle beams from trapped single-component plasmas"
Physics of Plasmas 16, 057105 (2009)

"Trap-based positron beams"
Applied Surface Science 194, (2002), pp. 56-60.