Calculation of gamma-ray buildup factors including the contribution of bremsstrahlung

Journal Article · Sat Sep 01 04:00:00 EDT 1973 · Nucl. Sci. Eng., v. 52, no. 1, pp. 117-123

OSTI ID:4429323

Kuspa, J P; Tsoulfanidis, N

Buildup factors for gamma rays traversing slab shields have been obtained using the Monte Carlo method. Secondary particles produced inside the shield were taken into account, with special attention given to the contribution of bremsstrahlung which is produced by electrons and positrons. The results indicate that annihilation gamma rays from pair production do increase the buildup factor a little, but that the bremsstrahlung contribution is much more pronounced. The contribution of bremsstrahlung to the dose buildup factor reaches 33% of its total value for 8-MeV gamma rays traversing 5 mean-free-paths of lead. For single-material shields, the results agree well with the experiment. For doublematerial shields, comparison with experiment is not possible due to the lack of such data. (auth)

• Research Organization: Univ. of Missouri, Rolla
• NSA Number: NSA-29-001959
• OSTI ID: 4429323
• Journal Information: Nucl. Sci. Eng., v. 52, no. 1, pp. 117-123, Journal Name: Nucl. Sci. Eng., v. 52, no. 1, pp. 117-123; ISSN NSENA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

*GAMMA RADIATION-- BUILDUP
*SHIELDING-- PHOTON TRANSPORT
BREMSSTRAHLUNG
MEAN FREE PATH
MEV RANGE 01-10
MONTE CARLO METHOD
N72400* --Physics (Radiation & Shielding)--Shielding Calculations & Experiments
RADIATION DOSES
SLABS