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Title: Discussion of the role of many-electron motions in multiphoton ionization and excitation

Abstract

The character of many-electron interactions in atoms is examined in relation to a possible role for these couplings in multiphoton processes. It is found that they provide a natural mechanism which can produce both (1) anomalously rapid rates of multiphoton ionization and (2) the direct production of electronically excited ionic species. Furthermore, it is determined that these two phenomena should be strongly correlated. On this basis, the experimental data concerning multiphoton ionization and the generation of fluorescence give evidence for a significant role for two-electron amplitudes in the heavy rare gases. For subpicosecond irradiation at 248 nm, the data indicate that the multi-electron processes become important above an intensity of {approximately} 10 {sup 14} W cm{sup {minus}2}, particularly for xenon. The trend exhibited by these findings suggests that multi-electron processes will become increasingly prominent at intensities above {approximately} 10{sup 16} W cm{sup {minus}2}.

Authors:
; ; ; ; ; ; ;  [1];  [2]
  1. Illinois Univ., Chicago, IL (United States). Lab. for Atomic, Molecular, and Radiation Physics
  2. Lawrence Livermore National Lab., CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States); Department of Defense, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
OSTI Identifier:
10147730
Report Number(s):
CONF-870789-5
ON: DE93011367
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: 4. international conference on multiphoton processes (ICOMP IV),Boulder, CO (United States),13-17 Jul 1987; Other Information: PBD: [1987]
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; PHOTOIONIZATION; MULTI-PHOTON PROCESSES; EXCITATION; FLUORESCENCE; CROSS SECTIONS; XENON; ELECTRON COLLISIONS; 664400; EXPERIMENTALLY DERIVED INFORMATION ON ATOMIC AND MOLECULAR PROPERTIES

Citation Formats

Boyer, K., Jara, H., Luk, T.S., McIntyre, I.A., McPherson, A., Rosman, R., Solem, J.C., Rhodes, C.K., and Szoeke, A. Discussion of the role of many-electron motions in multiphoton ionization and excitation. United States: N. p., 1987. Web.
Boyer, K., Jara, H., Luk, T.S., McIntyre, I.A., McPherson, A., Rosman, R., Solem, J.C., Rhodes, C.K., & Szoeke, A. Discussion of the role of many-electron motions in multiphoton ionization and excitation. United States.
Boyer, K., Jara, H., Luk, T.S., McIntyre, I.A., McPherson, A., Rosman, R., Solem, J.C., Rhodes, C.K., and Szoeke, A. Thu . "Discussion of the role of many-electron motions in multiphoton ionization and excitation". United States.
@article{osti_10147730,
title = {Discussion of the role of many-electron motions in multiphoton ionization and excitation},
author = {Boyer, K. and Jara, H. and Luk, T.S. and McIntyre, I.A. and McPherson, A. and Rosman, R. and Solem, J.C. and Rhodes, C.K. and Szoeke, A.},
abstractNote = {The character of many-electron interactions in atoms is examined in relation to a possible role for these couplings in multiphoton processes. It is found that they provide a natural mechanism which can produce both (1) anomalously rapid rates of multiphoton ionization and (2) the direct production of electronically excited ionic species. Furthermore, it is determined that these two phenomena should be strongly correlated. On this basis, the experimental data concerning multiphoton ionization and the generation of fluorescence give evidence for a significant role for two-electron amplitudes in the heavy rare gases. For subpicosecond irradiation at 248 nm, the data indicate that the multi-electron processes become important above an intensity of {approximately} 10 {sup 14} W cm{sup {minus}2}, particularly for xenon. The trend exhibited by these findings suggests that multi-electron processes will become increasingly prominent at intensities above {approximately} 10{sup 16} W cm{sup {minus}2}.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {12}
}

Conference:
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