Skyshine line-beam response functions for 20- to 100-MeV photons

Journal Article · Sat Jun 01 00:00:00 EDT 1996 · Nuclear Science and Engineering

OSTI ID:264345

Brockhoff, R C; Shultis, J K; Faw, R E ^[1]

---

1. Kansas State Univ., Manhattan, KS (United States). Dept. of Nuclear Engineering

The line-beam response function, needed for skyshine analyses based on the integral line-beam method, was evaluated with the MCNP Monte Carlo code for photon energies from 20 to 100 MeV and for source-to-detector distances out to 1,000 m. These results are compared with point-kernel results, and the effects of bremsstrahlung and positron transport in the air are found to be important in this energy range. The three-parameter empirical formula used in the integral line-beam skyshine method was fit to the MCNP results, and values of these parameters are reported for various source energies and angles.

• OSTI ID: 264345
• Journal Information: Nuclear Science and Engineering, Vol. 123, Issue 2; Other Information: PBD: Jun 1996
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
EARTH ATMOSPHERE
PHOTON TRANSPORT
RADIATION STREAMING
GAMMA RADIATION
M CODES
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
RADIATION DOSES
POINT SOURCES
POINT KERNELS
PHOTON BEAMS
GAMMA SOURCES