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Title: Ultrafast x-ray diffraction of laser-irradiated crystals

Abstract

An apparatus has been developed for measuring time-dependent x-ray diffraction. X-ray pulses from an Advanced Light Source bend magnet are diffracted by a sagittally-focusing Si(111) crystal and then by a sample crystal, presently InSb(111). Laser pulses with 100 fs duration and a repetition rate of 1 KHz irradiate the sample inducing a phase transition. Two types of detectors are being employed: an x-ray streak camera and an avalanche photodiode. The streak camera is driven by a photoconductive switch and has a 2 ps temporal resolution determined by trigger jitter. The avalanche photodiode has high quantum efficiency and sufficient time resolution to detect single x-ray pulses in ALS two bunch or camshaft operation. A beamline is under construction dedicated for time resolved and micro-diffraction experiments. In the new beamline a toroidal mirror collects 3 mrad horizontally and makes a 1:1 image of the bend magnet source in the x-ray hutch. A laser induced phase transition has been observed in InSb occurring within 70 ps.

Authors:
 [1];  [2];  [3]
  1. Lawrence Berkeley National Lab., CA (US). Advanced Light Source
  2. Univ. of California, Berkeley, CA (US). Physics Dept.
  3. Univ. of Michigan, Ann Arbor, MI (US). Center for Ultrafast Optical Science
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Advanced Light Source (US)
Sponsoring Org.:
USDOE Office of Energy Research, Washington, DC (US)
OSTI Identifier:
567361
Report Number(s):
LBNL-40925; CONF-9706157-; LSBL-417; LBNL/ALS-844
ON: DE98001382; TRN: US0201256
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Conference
Resource Relation:
Conference: SRI '97: 10. U.S. national conference on synchrotron radiation instrumentation, Ithaca, NY (US), 06/17/1997--06/20/1997; Other Information: Supercedes report DE98001382; PBD: Sep 1997; PBD: 1 Sep 1997
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 43 PARTICLE ACCELERATORS; ADVANCED LIGHT SOURCE; CONSTRUCTION; LASERS; MAGNETS; MIRRORS; PHOTODIODES; QUANTUM EFFICIENCY; RESOLUTION; STREAK CAMERAS; TIME RESOLUTION; X-RAY DIFFRACTION; INDIUM ALLOYS; ANTIMONY ALLOYS; INTERMETALLIC COMPOUNDS; ACCELERATOR FACILITIES; ADVANCED; LIGHT; SOURCE; ALS

Citation Formats

Heimann, P A, Larsson, J, and Chang, Z. Ultrafast x-ray diffraction of laser-irradiated crystals. United States: N. p., 1997. Web.
Heimann, P A, Larsson, J, & Chang, Z. Ultrafast x-ray diffraction of laser-irradiated crystals. United States.
Heimann, P A, Larsson, J, and Chang, Z. 1997. "Ultrafast x-ray diffraction of laser-irradiated crystals". United States. https://www.osti.gov/servlets/purl/567361.
@article{osti_567361,
title = {Ultrafast x-ray diffraction of laser-irradiated crystals},
author = {Heimann, P A and Larsson, J and Chang, Z},
abstractNote = {An apparatus has been developed for measuring time-dependent x-ray diffraction. X-ray pulses from an Advanced Light Source bend magnet are diffracted by a sagittally-focusing Si(111) crystal and then by a sample crystal, presently InSb(111). Laser pulses with 100 fs duration and a repetition rate of 1 KHz irradiate the sample inducing a phase transition. Two types of detectors are being employed: an x-ray streak camera and an avalanche photodiode. The streak camera is driven by a photoconductive switch and has a 2 ps temporal resolution determined by trigger jitter. The avalanche photodiode has high quantum efficiency and sufficient time resolution to detect single x-ray pulses in ALS two bunch or camshaft operation. A beamline is under construction dedicated for time resolved and micro-diffraction experiments. In the new beamline a toroidal mirror collects 3 mrad horizontally and makes a 1:1 image of the bend magnet source in the x-ray hutch. A laser induced phase transition has been observed in InSb occurring within 70 ps.},
doi = {},
url = {https://www.osti.gov/biblio/567361}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {9}
}

Conference:
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