TITLE

Ionization of Argon n=2 (Ar[sup +9] to Ar[sup +16]) by a “relativistic” laser field

AUTHOR(S)
Walker, Barry C.; Chowdury, Enam A.; Toth, C.; Wilson, K. R.; Barty, C. P. J.
PUB. DATE
July 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 525 Issue 1, p667
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The high field photoionization cross sections for the (n=2) shell of argon were measured with pulsed 800 nm radiation (27±5 fs duration) at an intensity of 1.5×10[sup 19] W/cm[sup 2]±1×10[sup 19] W/cm[sup 2]. The pondermotive energy for an electron at these field intensities is approximately 1 MeV. The best agreement with a calculated AC tunneling model was at an intensity of 0.6×10[sup 19] W/cm[sup 2]. The difference between experimental and calculated relative charge state yields is less than an order of magnitude for Ar[sup +9] to Ar[sup +14] and Ar[sup +16]. © 2000 American Institute of Physics.
ACCESSION #
6028317

 

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