Effect of phantom material on backscattered radiation against photon irradiation

Takahashi, Fumiaki; Yamaguchi, Yasuhiro

Radioisotopes, 52(2), p.94 - 97, 2003/02

https://doi.org/10.3769/radioisotopes.52.94

Effect of phantom material on backscattered radiations was studied for photon irradiation. Monte Carlo calculations using MCNP-4B code were performed to analyze scattered radiation on the surface of 30x30x15cm3 slab phantoms with different material. Dose on the surface of a human body was also estimated with a modified MIRD-5 type phantom. No significant difference of dose due to scattered radiation was observed between a soft tissue slab and phantom the water-filled slab phantom recommended by the International Organization for Standardization. On the other hand, dose on the surface of the PMMA phantom was found to be larger than doses on the phantom with water or soft tissue. The results also showed that response of dosimeter on the ISO phantom would be near to that on the trunk of a human body.

Free-volume distribution and positronium formation in amorphous polymers; Temperature and positron-irradiation-time dependence

C.L.Wang*; Hirade, Tetsuya; Maurer, F. H. J.*; Eldrup, M.*; N.J.Pedersen*

Journal of Chemical Physics, 108(11), p.4654 - 4661, 1998/03

https://doi.org/10.1063/1.475876

no abstracts in English

Low temperature gamma-ray irradiation effects on polymer materials,3; Gas evolution and change of molecular weight

Kudo, Hisaaki; Kasai, Noboru; Sasuga, Tsuneo; Seguchi, Tadao

Radiation Physics and Chemistry, 48(1), p.95 - 100, 1996/00

https://doi.org/10.1016/0969-806X(95)00433-X

no abstracts in English

Dose Evaluation Method of High-power X-ray Generator for Inadiation

; ; ;

JAERI-M 7891, 50 Pages, 1978/11

JAERI-M-7891.pdf:1.0MB

no abstracts in English