geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Theoretical and experimental radiation effectiveness of the free radical dosimeter alanine to irradiation with heavy charged particles


, : Theoretical and experimental radiation effectiveness of the free radical dosimeter alanine to irradiation with heavy charged particles. Radiation Research 104(1): 15-27

Dose-response characteristics have been measured for the crystalline amino acid L-.alpha.-alanine irradiated with ion beams of 6 and 16 MeV protons, 20 MeV .alpha. particles, 21 MeV7Li ions, 64 MeV16O ions, and 80 MeV32S ions. The experimental radiation effectiveness (RE) with reference to low-LET radiations of 60Co .gamma. rays, 4 and 16 MV X rays, and 6, 10, and 20 MeV electrons was compared with theoretical RE values derived from a model based on track structure theory of heavy charged particles. The ion beams covered a range in initial LET of 27-20,200 MeVcm2/g, and the experimental RE decreased with increasing LET being 1.00 for 16 MeV protons and 0.25 for the 80 MeV 32S ions. The calculated Re values were in acceptable agreement with the experimental results having a maximum deviation of 8% for the 7Li and 32S ions.

US$19.90

DOI: 10.2307/3576774


Other references

Ross, R.K.; Bernstein, L.; Lobo, R.A.; Shimizu, H.; Stanczyk, F.Z.; Pike, M.C.; Henderson, B.E., 1992: 5-alpha-reductase activity and risk of prostate cancer among Japanese and US white and black males. The incidence of prostate cancer varies widely between countries and ethnic groups. Black-Americans have the highest incidence rates world wide, whereas native Japanese have among the lowest. The reasons for this risk differential are unknown, alt...

Jafarey, N.A., 1989: Some suggestions about improvement of medical education in Pakistan. Jpma. Journal of the Pakistan Medical Association 39(5): 136-142

Backhurst J.R.; Harker J.H., 1988: The settling rates of larval feeds. This note describes an investigation into the settling rates of food particles for the feeding of prawns at various stages of their development. Experimental settling velocities are reported, essential to the design of rearing tanks, for both dry...

Peterson, W.J.; Sherwood, F.W.; Matrone, G., 1948: The influence of phosphate fertilization on the carotene and ribo-flavin content of the soybean plant. Although the mean wt. of individual plants receiving P was 2.5 times that of plants without P, the proportions of leaves, stems and pods were not influenced by fertilizers. P fertilizers increased the carotene content of the leaves from 186.4 to 2...

Vaamonde, J.; González, J.M.; Hernádez, A.; Ibáñez, R.; Gudin, M.A.; Del Real Francia, M.A., 2001: Writer's cramp induced by olanzapine. Journal of Neurology 248(5): 422-422

Lazareva, N.Y.; Bingi, V.N., 1997: To the effect of high diluted dibasol solutions on tomato seeds. The influence of the extremely diluted solutions of dibasol on tomato seeds has been investigated. It Is shown, that the steeping of the seeds in such solutions can result in both the stimulation and inhibition the germination of tomatoes and prim...

Magyar, I., 1970: The physician and death. Orvosi Hetilap 111(51): 3011-3014

Habazaki, H.; Yamasaki, M.; Kawashima, A.; Hashimoto, K., 2000: Methanation of carbon dioxide on Ni/(Zr-Sm)Ox catalysts. Ni/ZrO2 and Ni/(Zr0.9Sm0.1)0.95 catalysts were prepared by wet impregnation, and their catalytic activities for methanation of carbon dioxide were compared with the highly active catalysts prepared from amorphous nickel-zirconium-samarium alloys....

Fraps, R.M., 1943: Relation between ovarian function and avidin content in tho oviduct of tho Hen. Induction of avidin formation in the avian oviduct by stilbestrol plus progesterone. Proceedings of the Society for Experimental Biology and Medicine, 52: 140-144

Barkhatova N.N.; Berlin T.S.; Nemkov G.I.; Portnaya Y.L.; Khabakov A.V., 1979: Paleobiogeography and paleotemperature of the Eocene seas in Eurasia based on Nummulitidae. Voporsy Mikropaleontologii 22): 93-98