Strong [ital K][alpha] emission in picosecond laser-plasma interactions

Journal Article · Mon Nov 01 04:00:00 EST 1993 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.354240· OSTI ID:5944904

Soom, B; Chen, H; Fisher, Y; Meyerhofer, D D ^[1]

---

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

[ital K][alpha] emission is observed from the interaction of a picosecond, 1.05 [mu]m laser pulse at 4[times]10[sup 15] W/cm[sup 2] with a silicon target coated with various thicknesses of aluminum. Strong [ital K][alpha] emission requires a [ital p]-polarized, high-intensity-contrast laser pulse. At 7.1 A, the [ital K][alpha] yield is 1.5[times]10[sup 8] photons/sr with a duration of emission of [le]8 ps and a source area of 1.6[times]10[sup [minus]6] cm[sup 2]. The radiance is [ge]3[times]10[sup 9] W/cm[sup 2] sr. Monte Carlo simulations have suggested that under these conditions [ital K][alpha] emission is a promising candidate for an efficient, ultra-short-duration x-ray source at [similar to]1.5 A.

• DOE Contract Number: FC03-92SF19460
• OSTI ID: 5944904
• Journal Information: Journal of Applied Physics; (United States), Journal Name: Journal of Applied Physics; (United States) Vol. 74:9; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700350* -- Plasma Production
Heating
Current Drive
& Interactions-- (1992-)
ALUMINIUM
CALCULATION METHODS
ELECTROMAGNETIC RADIATION
ELEMENTS
INFRARED RADIATION
LASER-PRODUCED PLASMA
METALS
MONTE CARLO METHOD
PLASMA
PULSES
RADIATIONS
SEMIMETALS
SILICON
SPECTRA
TARGETS
X-RAY SPECTRA