Accession Number : AD0636647

Title :   CROSS SECTION FOR THE PRODUCTION OF (30)P FROM (31)P BY PROTONS OF ENERGIES BELOW 190 MEV.

Corporate Author : UPPSALA UNIV (SWEDEN) GUSTAF WERNER INST

Personal Author(s) : MALBORG, P.

Report Date : DEC 1964

Pagination or Media Count : 26

Abstract : The excitation function for the production of (30)P from (31)P by protons between 20 and 190 MeV has been measured. The sum of the cross sections of the reactions leading to the production of (30)P from (31)P was found to rise from threshold to a maximum of 50 to 100 millibarns between 15 and 50 MeV. At higher energies there was a continuous decrease to (32 plus or minus 5) millibarns at 100 MeV and (25 plus or minus 4 millibarns at 180 MeV. The result has some bearing upon the significance of (30)P as a contributor to the delayed radiation dose after irradiation of tissues with high-energy protons. The conclusion is drawn that (30)P should not be regarded important from this aspect as compared with the dominating radionuclides (15)O, (11)C and (13)N. (Author)

Descriptors :   (*RADIATION DOSAGE, *PROTONS), (*NUCLEAR REACTIONS, RADIOBIOLOGY), TISSUES(BIOLOGY), SPALLATION, RADIOACTIVE DECAY, RADIATION EFFECTS, SWEDEN

Subject Categories : Radiobiology
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE