Resonance absorption in high-intensity contrast, picosecond laser--plasma interactions

Journal Article · Thu Jul 01 04:00:00 EDT 1993 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.860694· OSTI ID:6423020

Meyerhofer, D D; Chen, H; Delettrez, J A; Soom, B; Uchida, S; Yaakobi, B ^[1]

---

1. Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623-1299 (United States)

The interaction of high-intensity contrast, picosecond, 1-[mu]m laser pulses with solid metal targets is studied with K[sub [alpha]] emission from multilayer targets, fast ion blowoff, and other diagnostics. It is found that the characteristics of the interaction are determined by the intensity of the [ital p]-polarized component of the incoming laser field, rather than the total intensity. Consistent with resonance absorption, 20%--30% of the laser energy is deposited into suprathermal electrons that have temperatures from 2--10 keV.

• DOE Contract Number: FC03-92SF19460
• OSTI ID: 6423020
• Journal Information: Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 5:7; ISSN 0899-8221; ISSN PFBPEI
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700350* -- Plasma Production
Heating
Current Drive
& Interactions-- (1992-)
ABSORPTION
ELECTROMAGNETIC RADIATION
ELECTRON TEMPERATURE
IRRADIATION
LASER RADIATION
LASER-PRODUCED PLASMA
PLASMA
POLARIZATION
PULSED IRRADIATION
RADIATIONS
RESONANCE ABSORPTION
SOLIDS
SORPTION