Multiphoton above-threshold detachment by intense laser pulses: A new adiabatic approach

Journal Article · Wed May 01 04:00:00 EDT 1996 · Bulletin of the American Physical Society

OSTI ID:394354

Telnov, D; Chu, S I

The authors present a new adiabatic approach for nonperturbative treatment of multiphoton above-threshold detachment (ATD) in intense laser pulses. The electron energy distributions for the pulse detachment are expressed via the detachment transition amplitudes in the monochromatic fields, and the latter are calculated with the help of the adiabatic Floquet theory based on the smallness of the laser frequency compared with the electron affinity or ionization potential. The theory is applied to the study of the pulse shape effects on the multiphoton ATD of the negative ion H{sup {minus}} by 10.6{mu}m radiation. The authors present also the angle-resolved as well as angle-integrated ATD electron energy distributions. They contain oscillatory satellite structures to the main peaks due to interference of the electrons detached on the rising and falling edges of the pulse. Simple analytical formulas describing these subpeak structures are also presented.

• OSTI ID: 394354
• Report Number(s): CONF-9605105--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 41; ISSN BAPSA6; ISSN 0003-0503
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ELECTRON DETACHMENT
FLOQUET FUNCTION
HYDROGEN IONS 1 MINUS
LASER RADIATION
MULTI-PHOTON PROCESSES