References -- Dave Knapp

  1. Measurement of the Electron Capture Branching Ratio of 7Be Using Internal Bremsstrahlung, D.A. Knapp, A.B. McDonald, and C.L. Bennett, Nucl. Phys. A411, 195-198 (1983)

  2. Limit on the Electron Antineutrino Mass from Free-Molecular Tritium Beta Decay, J.F. Wilkerson, T.J. Bowles, J.C. Browne, M.P. Maley, R.G.H. Robertson, J.S. Cohen, R.L. Martin, D.A. Knapp, and J.A. Helffrich, Phys. Rev. Lett. 58, 2023-2026 (1987).

  3. Measurement of Electron Impact Excitation Cross Sections for Very Highly Charged Ions, R.E. Marrs, M.A. Levine, D.A. Knapp, and J.R. Henderson, Phys. Rev. Lett. 60, 1715 (1988)

  4. The Electron Beam Ion Trap: A New Instrument for Atomic Physics Measurements, M.A. Levine, R.E. Marrs, J.R. Henderson, D.A. Knapp, and M.B. Schneider, Phys. Scr. T22, 157 (1988)

  5. Direct Measurements of Neutrino Mass, R.G.H. Robertson and D.A. Knapp, Ann. Rev. Nuc. Part. Sci. 38, 185-215 (1988).

  6. Dielectronic Recombination of Helium-Like Nickel, D.A. Knapp, R.E. Marrs, M.A. Levine, C.L. Bennett, M.H. Chen, J.R. Henderson, M.B. Schneider, and J.H. Scofield, Phys. Rev. Lett. 62, 2104-2107 (1989).

  7. Measurement of Relative Differential Electron-Impact-Excitation Cross Sections for Fe24+, C. M. Brown, U. Feldman, G. A. Doschek, J. F. Seely, R. E. LaVilla, V. L. Jacobs, J. R. Henderson, D. A. Knapp, R. E. Marrs, P. Beiersdorfer, and M. A. Levine, Phys. Rev. A 40, 4089 (1989).

  8. The Use of an Electron Beam Ion Trap in the Study of Highly Charged Ions, M. A. Levine, R. E. Marrs, J. N. Bardsley, P. Beiersdorfer, C. L. Bennett, M. H. Chen, T. Cowan, D. Dietrich, J. R. Henderson, D. A. Knapp, B. M. Penetrante, M. B. Schneider, and J. H. Scofield, Nucl. Inst. Meth. B43, 431 (1989).

  9. Status of the Los Alamos Tritium Beta Decay Experiment, T. J. Bowles, R. G. H. Robertson, D. L. Wark, J. F. Wilkerson, and D. A. Knapp, Nuclear Physics B 13, 514 (1990)

  10. Indirect X-Ray Line Formation Processes in Highly-Charged Barium, P. Beiersdorfer, A. L. Osterheld, M. H. Chen, J. R. Henderson, D. A. Knapp, M. A. Levine, R. E. Marrs, K. J. Reed, M. B. Schneider, and D. A. Vogel, Phys. Rev. Lett. 65, 1995 (1990)

  11. Precision Measurement of the 3s1/2 - 3p3/2 Transition Energy in Sodium-like Platinum Ions, T. E. Cowan, C. L. Bennett, D. D. Dietrich, J. Bixler, C. J. Hailey, J. R. Henderson, D. A. Knapp, M. A. Levine, R. E. Marrs, and M. B. Schneider Phys. Rev. Lett. 66, 1150 (1991)

  12. Polarization of X Ray Emission Lines from Helium-like Scandium as a Probe of the Hyperfine Interaction, J. R. Henderson, P. Beiersdorfer, C. L. Bennett, S. Chantrenne, D. A. Knapp, R. E. Marrs, M. B. Schneider, K. L. Wong, G. A. Doschek, J. F. Seely, C. M. Brown, R. E. LaVilla, J. Dubau, and M. A. Levine, Phys. Rev. Lett. 65, 705 (1990).

  13. High-Resolution X-Ray Spectrometer for an Electron Beam Ion Trap, P. Beiersdorfer, R. E. Marrs, J. Henderson, D. Knapp, M. Levine, D. Platt, M. Schneider, D. Vogel, and K. Wong, Rev. Sci. Inst. 61, 2338 (1990).

  14. Dielectronic Recombination Measurements at EBIT, D. A. Knapp, Z. Phys. D 21, S143- 146 (1991).

  15. Evaporative Cooling of Highly-Charged Dysprosium Ions in an Enhanced Electron Beam Ion Trap,

  16. Measurement of LMM Dielectronic Recombination Resonances of Neonlike Gold, M. B. Schneider, D. A. Knapp, M. H. Chen, J. H. Scofield, P. Beiersdorfer, C. L. Bennett, J. R. Henderson, M. A. Levine, and R. E. Marrs, Phys Rev. A45, R1291-R1294 (1992)

  17. Correspondence of Electron Spectra from Photoionization and Nuclear Internal Conversion, D. L. Wark, R. Bartlett, T. J. Bowles, R. G. H. Robertson, D. S. Sivia, W. Trela, J. F. Wilkerson, G. S. Brown, B. Crasemann, S. L. Sorenson, S. J. Schaphorst, D. A. Knapp, J. R. Henderson, J. Ulkki, and T. Aberg, Phys. Rev. Lett 67, 2291 (1991).

  18. Electron-Ion Interaction Cross Sections Determined by X-Ray Spectroscopy on EBIT, P. Beiersdorfer, R. Cauble, S. Chantrenne, M. H. Chen, D. A. Knapp, R. E. Marrs, T. Phillips, K. Reed, M. B. Schneider, J. H. Scofield, K. Wong, D. A. Vogel, R. Zasadzinski, B. Wargelin, M. Bitter, and S. von Goeler, Electron and Atomic Collisions, Invited Papers, XVII ICPEAC, ed. W. R. MacGillivray, I. E. McCarthy, and M. C. Standage (Adam Hilger, NY) p. 313-322 (1992).

  19. Limit on ne Mass from Observation of the Beta Decay of Molecular Tritium, R. G. H. Robertson, T. J. Bowles, G. J. Stephenson, Jr., D. L. Wark, J. F. Wilkerson, and D. A. Knapp, Phys. Rev. Lett. 67, 957 (1991).

  20. Dielectronic Recombination Measurements Using the Electron Beam Ion Trap, D. A. Knapp, in Recombination of Atomic Ions, NATO ASI Series B 296, 181 (1992).

  21. Precision Measurement of the Ka Transitions in Heliumlike Ge30+, S. MacLaren, P. Beiersdorfer, D. A. Vogel, D. A. Knapp, R. E. Marrs, K. Wong, and R. Zasadzinski, Phys. Rev. A45, 329 (1992).

  22. Dielectronic Recombination Measurements of Highly-Charged Helium-like and Neon-like Ions using an Electron Beam Ion Trap, M. B. Schneider, D. A. Knapp, P. Beiersdorfer, M. H. Chen, J. H. Scofield, C. L. Bennett, D. DeWitt, J. R. Henderson, P. Lee, M. Levine, R. E. Marrs, and D. Schneider, in Atomic Processes in Plasmas, AIP Conf. Proc. 257, 26 (1992).

  23. X-Ray Spectroscopy with EBIT, P. Beiersdorfer, R. Cauble, S. Chantrenne, M. H. Chen, N. DelGrande, D. A. Knapp, R. E. Marrs, A. Osterheld, K. Reed, M. B. Schneider, J. H. Scofield, B. Wargelin, K. Wong, D. A. Vogel, and R. Zasadzinski, Proc. 10th Intl. Colloq. on UV and X-Ray Spect. of Astrophys. and Lab. Plasmas, Berkeley, CA, Eds. E. Silver and S. Kahn, p.59 (1992).

  24. Cross Sections for K Shell Ionization of Cr21+ Ions by Electron Impact, D. Vogel, P. Beiersdorfer, D. A. Knapp, R. E. Marrs, K. Reed, K. Wong, and R. Zasadzinski, Phys. Rev. A (1992).

  25. Evidence for Internal Dielectronic Excitation of Slow Highly-Charged Uranium Ions on a Surface, R. Schuch, D. Schneider, D. A. Knapp, D. DeWitt, J. McDonald, M. H. Chen, M. W. Clark, and R. E. Marrs, Phys. Rev. Lett. 70, 1073 (1993).

  26. Dielectronic Recombination of Heliumlike Ions, D. A. Knapp, R. E. Marrs, M. B. Schneider, M. H. Chen, M. A. Levine, and P. Lee, Phys Rev. A 47, 2039 (1993).

  27. EBIT Trapping Program, S. R. Elliott, B. Beck, P. Beiersdorfer, D. Church, D. DeWitt, D. A. Knapp, R. E. Marrs, D. Schneider, and L. Schweikhard, Hyperfine Interactions 81, 151 (1993).

  28. A High-Energy Electron Beam Ion Trap for Production of High-Charge, High-Z Ions, D. A. Knapp, R. E. Marrs, S. R. Elliott, E. W. Magee, and R. Zasadzinski, Nucl. Instr. Meth. A 334, 305 (1993).

  29. Structure and Lamb Shift of 2s1/2-2p3/2 Levels in Lithiumlike U89+ Through Neonlike U82+, P. Beiersdorfer, D. A. Knapp, R. E. Marrs, S. R. Elliott, and M. H. Chen, Phys. Rev. Lett. 71, 3939 (1993).

  30. Studies of the Interaction of Slow Very Highly Charged Ions with Solid Surfaces using the LLNL EBIT Facility, M. A. Briere, D. Schneider, J. McDonald, M. Reaves, C. Rühlicke, G. Weinberg, and D. Knapp, Nucl. Instrum. Meth. B 90, 231 (1994).

  31. Production and Trapping of Hydrogenlike and Bare Uranium Ions in an Electron Beam Ion Trap, R. E. Marrs, S. R. Elliott, and D. A. Knapp, Phys. Rev. Lett. 72, 4082 (1994).

  32. Studies of He-like Kr for Use in Determining Electron and Ion Temperatures in Very High- Temperature Plasmas, K. Widmann, P. Beiersdorfer, V. Decaux, S. R. Elliott, D. Knapp, A. Osterheld, M. Bitter, and A. Smith, submitted to Rev. Sci. Instrum. (1994).

  33. Observation of Interference Between Dielectronic Recombination and Radiative Recombination in Highly Charged Uranium Ions, D. A. Knapp, P. Beiersdorfer, M. H. Chen, J. H. Scofield, and D. Schneider, Phys. Rev. Lett. 74, 54 (1995).

  34. Confinement in a Cryogenic Penning Trap of Highest Charge State Ions from EBIT, D. Schneider, D. A. Church, G. Weinberg, J. Steiger, B. Beck, J. McDonald, E. Magee, and D. Knapp, Rev. Sci. Instrum. 65, 3472 (1994)