Neutron exposure dosimetry of humans by in vivo gamma measurement of sodium-24

Technical Report · Mon Sep 21 04:00:00 EDT 1959

OSTI ID:7016529

Cofield, R E

A procedure for neutron dosimetry of humans by in vivo gamma spectrometric measurement of the sodium-24 content of the human body is described. Specific calibration of the 9-inch-diameter x 4-inch thick Na scintillation crystal of the Y-12 In Vivo Radioactivity Measurement Facility for body sodium-24 is included. The apparent limit of detection, at an examination rate of one subject each fifteen to twenty minutes is .0025 microcurie sodium-24 in the body. The relationship of body sodium-24 to neutron dose is made on the basis of the 1958 Y-12 criticality accident and results in an apparent limit of detection of 12.5 millirads if the sodium-24 measurement is made within fifteen hours after neutron exposure.

• Research Organization: Union Carbide Nuclear Co., Oak Ridge, TN (United States)
• OSTI ID: 7016529
• Report Number(s): PB-94-188414/XAB; Y--1283; CNN: AEC-W-7405-ENG-26
• Country of Publication: United States
• Language: English

Related Subjects

560101* -- Biomedical Sciences
Applied Studies-- Radiation Effects-- Dosimetry & Monitoring-- (1992-)
61 RADIATION PROTECTION AND DOSIMETRY
ALKALI META
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
COUNTING TECHNIQUES
DOSIMETRY
HOURS LIVING RADIOISOTOPES
HUMAN POPULATIONS
IN VIVO
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LIGHT NUCLEI
MILLISEC LIVING RADIOISOTOPES
NEUTRON DOSIMETRY
NUCLEI
ODD-ODD NUCLEI
POPULATIONS
RADIOISOTOPES
SCINTILLATION COUNTING
SECONDS LIVING RADIOISOTOPES
SODIUM 24
SODIUM ISOTOPES