Observation of multiphoton detachment of the H/sup /minus// ion

Journal Article · Thu Jun 01 04:00:00 EDT 1989 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.39.6068· OSTI ID:6141357

Tang, C Y; Harris, P G; Mohagheghi, A H; Bryant, H C; Quick, C R; Donahue, J B; Reeder, R A; Cohen, S; Smith, W W; Stewart, J E; others, and

We have observed nonresonant multiphoton electron detachment of H/sup /minus// ions in moderately intense (a few tens of GW/cm/sup 2/) laser fields. A well-collimated beam of H/sup /minus// ions with an energy of 581 MeV was intersected by focused 10.6-..mu..m radiation from a pulsed CO/sub 2/ laser. The center-of-mass photon energy was tuned using the relativistic Doppler shift so that the minimum number of simultaneous photons required for electron detachment ranged from three to sixteen. Definite signals were observed for the minimum photon number ranging from three to eight. Our preliminary results show evidence for structure in the relative total cross section.

• Research Organization: The University of New Mexico, Albuquerque, New Mexico 87131(US); Los Alamos National Laboratory, Los Alamos, New Mexico 87545; Cohen Mechanical Design, Broomall, Pennsylvania 19008; The University of Connecticut, Storrs, Connecticut 06268; Western Washington University, Bellingham, Washington 98225
• DOE Contract Number: AS04-77ER03998
• OSTI ID: 6141357
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 39:11; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ANIONS
CARBON DIOXIDE LASERS
CHARGED PARTICLES
COINCIDENCE METHODS
COLLISIONS
COUNTING TECHNIQUES
CROSS SECTIONS
ELECTROMAGNETIC RADIATION
ELECTRON DETACHMENT
ENERGY RANGE
GAS LASERS
HYDROGEN IONS
HYDROGEN IONS 1 MINUS
ION COLLISIONS
IONS
LASER RADIATION
LASERS
MEV RANGE
MULTI-PHOTON PROCESSES
PHOTON COLLISIONS
PHOTON-ION COLLISIONS
RADIATIONS
TOTAL CROSS SECTIONS