Low-energy x-ray dosimetry studies (6 to 16 keV) at SSRL beamline 1-5

Journal Article · Tue Jul 01 04:00:00 EDT 1997 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.54600· OSTI ID:21179519

Ipe, N E; Chatterji, S; Fasso, A; Kase, K R; Seefred, R ^[1]; Olko, P; Bilski, P ^[2]; Soares, C ^[3]

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1. Stanford Linear Accelerator Center, Stanford University, Stanford, California 94070 (United States)
2. Health Physics Lab, Institute Of Nuclear Physics, Krakow (Poland)
3. United States Department of Commerce, NIST Ionizing Radiation Division, Gaithersburg, Maryland 20899 (United States)

Synchrotron radiation facilities provide a unique opportunity for low-energy x-ray dosimetry studies because of the availability of monochromatic x-ray beams. Results of such studies performed at the Stanford Synchrotron Radiation Laboratory (SSRL) are described. Polish lithium fluoride thermoluminescent dosemeters (TLDs), MTS-N(LiF:Mg, Ti- 0.4 mm thick), MCP-N (LiF:Mg, Cu, P - 0.4 mm thick) were exposed free in air to monochromatic x-rays (6-16 keV). These exposures were monitored with an SSRL ionization chamber. The responses (counts/Gy) of MTS-N and MCP-N were generally found to increase with increasing energy. The response at 16 keV is about 3 and 4 times higher than the response at 6 keV for MTS-N and MCP-N, respectively. Irradiation at 6 keV indicates a fairly linear dose response for both type of TLDs over a dose range of 0.01 to 0.4 Gy. In addition there appears to be no significant difference in responses between irradiating the TLDs from the front and the back sides. The energy response of the PTW ionization chamber type 23342 relative to the SSRL ionization chamber is within {+-}4.5% between 6 and 16 keV. Both the TLDs and the PTW ionization chamber can also be used for beam dosimetry.

• OSTI ID: 21179519
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 417; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
61 RADIATION PROTECTION AND DOSIMETRY
DOSES
IONIZATION CHAMBERS
IRRADIATION
KEV RANGE
LITHIUM FLUORIDES
MONOCHROMATIC RADIATION
PHOTON BEAMS
SYNCHROTRON RADIATION
SYNCHROTRON RADIATION SOURCES
THERMOLUMINESCENT DOSEMETERS
THERMOLUMINESCENT DOSIMETRY
X RADIATION
X-RAY DOSIMETRY