Measurement of activity yields for /sup 12/C(. gamma. , n)/sup 11/C, /sup 14/N(. gamma. , n)/sup 13/N, and /sup 16/O(. gamma. , n)/sup 15/O reactions as a function of electron beam energy and angle from the electron beam using thick target produced bremsstrahlung
The calculation of activity yields from practical photonuclear target systems designed to produce short-lived positron emitting radionuclides for nuclear medicine purposes requires certain basic information. These include a knowledge of the photon source (bremsstrahlung energy spectrum and intensity as a function of angle from the electron beam) and the ..gamma.., n activation cross section of the secondary target element. A lack of adequate information concerning these parameters motivated the present study in which activity yields for the reactions /sup 12/C(..gamma.., n)/sup 11/C, /sup 14/N(..gamma.., n)/sup 13/N, and /sup 16/O(..gamma.., n)/sup 15/O were measured as a function of energy of and angle from the electron beam between 16 and 30 MeV and 0/sup 0/ and 30.5/sup 0/, respectively. The data indicate highly complex relationships between the activity yield and the experimental variables. Also indicated are possible applications of the data to indicate the energy of an electron beam producing a given bremsstrahlung field in which activation measurements are made.
- Research Organization:
- Nuclear Medicine Laboratory, Division of Electronic Products, BRH, FDA, University of Cincinnati Medical Center, Cincinnati, Ohio 45267
- OSTI ID:
- 6072481
- Journal Information:
- Med. Phys.; (United States), Vol. 10:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA SOURCES
FABRICATION
CARBON 11
ISOTOPE PRODUCTION
NUCLEAR REACTION YIELD
CARBON 12 TARGET
PHOTONUCLEAR REACTIONS
NITROGEN 13
NITROGEN 14 TARGET
OXYGEN 15
OXYGEN 16 TARGET
ACTIVATION ANALYSIS
ACTIVATION ENERGY
BREMSSTRAHLUNG
CROSS SECTIONS
ELECTRON BEAMS
LINEAR ACCELERATORS
MEV RANGE 10-100
SYNTHESIS
ACCELERATORS
BEAMS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CARBON ISOTOPES
CHEMICAL ANALYSIS
ELECTROMAGNETIC RADIATION
ELECTRON CAPTURE RADIOISOTOPES
ENERGY
ENERGY RANGE
EVEN-ODD NUCLEI
ISOTOPES
LEPTON BEAMS
LIGHT NUCLEI
MEV RANGE
MINUTES LIVING RADIOISOTOPES
NITROGEN ISOTOPES
NUCLEAR REACTIONS
NUCLEI
ODD-EVEN NUCLEI
OXYGEN ISOTOPES
PARTICLE BEAMS
PARTICLE SOURCES
RADIATION SOURCES
RADIATIONS
RADIOISOTOPES
TARGETS
YIELDS
070201* - Radiation Sources- Design
Fabrication & Operation
651325 - Nuclear Properties & Reactions
A=6-19
Experimental- Nuclear Reactions & Scattering- (-1987)