Nuclear-accident dosimetry: measurements at the Los Alamos SHEBA critical assembly
Criticality dosimeters were exposed to different degraded neutron and gamma-ray energy spectra from the Los Alamos Solution High Energy Burst Assembly (SHEBA). The liquid critical test assembly was operated in the continuous mode to provide a mixed source of neutron and gamma-ray radiation for the evaluation of Los Alamos criticality detector systems. Different neutron and gamma-ray spectra were generated by operating the reactor (a) shielded by 12 cm of Lucite, (b) unshielded, (c) shielded by 20 cm of concrete, and (d) shielded by 15 cm of steel. This report summarizes the dosimetry measurements conducted for these different configurations. In-air measurements were conducted with shielded and unshielded area and personnel dosimeters. Phantom measurements were made using personnel dosimeters. Combined blood-sodium and hair sulfur activation measurements of absorbed dose were also made. In addition, indium foils placed on phantoms were evaluated for the purpose of screening personnel for radiation exposure.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- Sponsoring Organization:
- Not Available; USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6450557
- Report Number(s):
- LA-8911-MS; ON: DE81026673
- Country of Publication:
- United States
- Language:
- English
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655003* -- Medical Physics-- Dosimetry
ACCIDENTS
BIOLOGICAL MATERIALS
BLOOD
BODY
BODY FLUIDS
CRITICALITY
DATA
DOSES
DOSIMETRY
EXPERIMENTAL DATA
GAMMA SPECTRA
HAIR
INFORMATION
MATERIALS
MOCKUP
NEUTRON SPECTRA
NUMERICAL DATA
Nuclear Criticality Safety Program (NCSP)
ORGANS
PERSONNEL DOSIMETRY
PHANTOMS
RADIATION ACCIDENTS
RADIATION DOSES
RADIATION PROTECTION
SIMULATION
SKIN
SPECTRA
STRUCTURAL MODELS