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Title: High Repetition Rate Grazing Incidence Pumped X-ray Laser operating at 18.9 nm

We have demonstrated a 10 Hz Ni-like Mo X-ray laser operating at 18.9 nm with 150 mJ total pump energy by employing a novel pumping scheme. The grazing incidence scheme is described, where a picosecond pulse is incident at a grazing angle to a Mo plasma column produced by a slab target irradiated by a 200 ps laser pulse. This scheme uses refraction of the short pulse at a pre-determined electron density to increase absorption to pump a specific gain region. The high efficiency inherent to this scheme allows a reduction in the pump energy where 70 mJ long pulse energy and 80 mJ short pulse energy are sufficient to produce lasing at a 10 Hz repetition rate. Under these conditions and by optimizing the delay between the pulses, we achieve strong amplification and saturation for 4 mm long targets.
Authors:
; ; ; ; ;
Publication Date:
OSTI Identifier:
15015882
Report Number(s):
UCRL-JRNL-204477
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US0501696
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 94; Other Information: Publication date March 18, 2005; PDF-FILE: 17 ; SIZE: 0.5 MBYTES; PBD: 11 May 2004
Research Org:
Lawrence Livermore National Lab., Livermore, CA (US)
Sponsoring Org:
US Department of Energy (US)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ABSORPTION; AMPLIFICATION; EFFICIENCY; ELECTRON DENSITY; LASERS; PLASMA; PUMPING; REFRACTION; SATURATION; TARGETS; X-RAY LASERS