The Relative Biological Effectiveness of 22-Mevp X-Rays, Cobalt-60 Gamma Rays, and 200-Kvcp X-Rays: II. The Use of the Ferrous Sulfate Dosimeter for X-Ray and Gamma-Ray Beams
Experimental G values for the radiolysis of ferrous ion to ferric ion in the ferrous sulfate dosimeter were determined as follows: l5.8 plus or minus 0.5 molecules per 100 ev for 22-Mevp x rays; 15.8 plus or minus 0.4 molecules per 100 ev for Co/sup 60/ gamma rays; 15.6 plus or minus 0.5 molecules per 100n ev for Cs /sup 137/ gamma rays. and l4.6 plus or minus 0.4 molecules per 100 ev for 200-kvcp x rays. These were compared with values in the literature and were found to be in fair agreement. The errors introduced by the use of the effective photon energy instead of a full x-ray spectrum were found to be small when water or tissue is substituted for dosimeter solution. Absorption coefficients, G values, and formulas are presented for use with the ferrous sulfate dosimeter at various photon energies.
- Research Organization:
- Univ. of Texas, M.D. Anderson Hospital and Tumor Inst., Houston
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-16-017514
- OSTI ID:
- 4785706
- Journal Information:
- Radiation Research, Vol. 16, Issue 3; Other Information: Orig. Receipt Date: 31-DEC-62; ISSN 0033-7587
- Publisher:
- Radiation Research Society
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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