Broad-band soft x-ray diagnostic instruments at the LLNL Novette laser facility

Conference · Thu Sep 15 00:00:00 EDT 1983

OSTI ID:5085891

Tirsell, K G; Lee, P H.Y.; Nilson, D G; Medecki, H

Complementary broad-band instruments have been developed to measure time dependent, absolute soft x-ray spectra at the Lawrence Livermore National Laboratory (LLNL) Nd glass laser irradiation facilities. Absolute flux measurements of x rays emitted from laser-produced plasmas are important for understanding laser absorption and energy transport. We will describe two new 10-channel XRD systems that have been installed at the LLNL Novette facility for use in the 0.15- to 1.5-keV range. Since XRD channel time response is limited by available oscilloscope performance to 120 ps, a soft x-ray streak camera has been developed for better time resolution (20 ps) and greater dynamic range (approx.10/sup 3/) in the same x-ray energy region. Using suitable filters, grazing incidence mirrors, and a gold or cesium-iodide transmission cathode, this streak camera instrument has been installed at Novette to provide one broad and four relatively narrow channels. It can also be used in a single channel, spatially discriminating mode by means of pinhole imaging. The complementary nature of these instruments has been enhanced by locating them in close proximity and matching their channel energy responses. As an example of the use of these instruments, we present results from Novette 2..omega..(0.53 ..mu..m) gold disk irradiations at 1 ns and 10/sup 14/ to 10/sup 15/ W/cm/sup 2/.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5085891
• Report Number(s): UCRL-89700; CONF-8309208-3; ON: DE86000738
• Resource Relation: Conference: 16. European conference on laser interaction with matter, London, UK, 26 Sep 1983; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
NOVETTE FACILITY
X-RAY DETECTION
STREAK PHOTOGRAPHY
LASER-PRODUCED PLASMA
NEODYMIUM LASERS
SOFT X RADIATION
TIME DEPENDENCE
DETECTION
ELECTROMAGNETIC RADIATION
IONIZING RADIATIONS
LASERS
PHOTOGRAPHY
PLASMA
RADIATION DETECTION
RADIATIONS
SOLID STATE LASERS
X RADIATION
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