Experimental verification of dosimetry predictions of bremsstrahlung attenuation as a function of material and electron energy

Conference · Fri Jan 01 00:00:00 EST 1993

OSTI ID:6325943

Sanford, T W.L.; Halbleib, J A; Beutler, D E ^[1]; Knott, D P ^[2]

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1. Sandia National Labs., Albuquerque, NM (United States)
2. Technical Support Corp., Albuquerque, NM (United States)

Dose attenuation with depth in an absorber of on-axis bremsstrahlung generated from an electron target is measured and shown to agree within [plus minus]9% with Monte Carlo predictions as a function of absorber material (Al, Fe, Pb) and incident electron-beam energy (5.5--25.1 MeV). For this on-axis bremsstrahlung, 1 to 5 g/cm[sup 2] of upstream and 0.2 to 1 g/cm[sup 2] of downs Al buffer is sufficient to provide electron equilibration for CaF[sub 2]:Mn thermoluminescent dosimeter (TLDs) over the measured energy range of 5.5 to 25.1 MeV, respectively. Once effective'' equilibration has been established, an expression of the form DA/Q = C[sub 1]V[sup c[sub 2]]e[sup [minus]C][sub 3]V[sup c][sub 4][ell], can be used to predict the dose-area (DA) product per absorbed beam charge (Q) at a given incident beam energy (V) in TLDs as a function of depth ([ell]) in absorbers, within a fixed solid angle centered about the beam axis. This expression is quantified for the measurements presented here.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6325943
• Report Number(s): SAND-93-0245C; CONF-930704-9; ON: DE93013745
• Resource Relation: Conference: Nuclear and space radiation effects conference, Snowbird, UT (United States), 19-23 Jul 1993
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
61 RADIATION PROTECTION AND DOSIMETRY
BREMSSTRAHLUNG
ATTENUATION
RADIATION DOSES
I CODES
ALUMINIUM
BENCHMARKS
DOSIMETRY
ENERGY ABSORPTION
IRON
LEAD
MEV RANGE
THERMOLUMINESCENT DOSIMETRY
ABSORPTION
COMPUTER CODES
DOSES
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY RANGE
METALS
RADIATIONS
SORPTION
TRANSITION ELEMENTS
663620* - Physics of Radiations Other Than Neutrons- (1992-)
560101 - Biomedical Sciences
Applied Studies- Radiation Effects- Dosimetry & Monitoring- (1992-)