Study of radionuclides created by sup 181 Ta(. gamma. ,xn yp) reactions for bremsstrahlung photons produced by 150-MeV electrons

Technical Report · Sun Dec 01 00:00:00 EST 1991

DOI:https://doi.org/10.2172/5810666· OSTI ID:5810666

Miller, M A ^[1]; Dickens, J K ^[2]

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1. Wisconsin Univ., River Falls, WI (United States)
2. Oak Ridge National Lab., TN (United States)

Ten radionuclides, including isomers, from {sup 172}Ta to {sup 180}Ta and {sup 180m}Hf were produced by photon interactions with a sample of elemental tantalum and measured by counting photons using a high-resolution detection system. Relative yields of these radionuclides were obtained. In addition, precision half lives were obtained for {sup 175,176,180}Ta and {sup 180m}Hf. Those obtained for the three Ta isotopes agree with previously reported values. For {sup 180m}Hf, the present measurements resulted in a half life determination of 6.05{plus minus}0.06 hr, or about 10% longer than the currently adopted value for this half life.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5810666
• Report Number(s): ORNL/TM-11944; ON: DE92009883
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
HAFNIUM 180
HALF-LIFE
TANTALUM 181 TARGET
PHOTONUCLEAR REACTIONS
TANTALUM ISOTOPES
BREMSSTRAHLUNG
DAYS LIVING RADIOISOTOPES
ELECTROMAGNETIC RADIATION
EVEN-EVEN NUCLEI
HAFNIUM ISOTOPES
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
NUCLEAR REACTIONS
NUCLEI
RADIATIONS
RADIOISOTOPES
STABLE ISOTOPES
TARGETS
YEARS LIVING RADIOISOTOPES
663410* - Photonuclear Reactions & Photon Scattering- (1992-)
663570 - Nuclear Mass Ranges- A=150-189- (1992-)
663200 - Radioactivity & Electromagnetic Transitions- (1992-)