A measurement of the internal pair (IPC) Branch from the J{sup {pi}}=3{sup {minus}} 2647 keV state in {sup 206}Pb
Journal Article
·
· Bulletin of the American Physical Society
OSTI ID:255622
In order to verify the ability to kinematically reconstruct sharp sum energy peaks arising from internal pair emission from swiftly moving ({Beta} = 0.04-0.12) ions, and to measure the efficiency of the APEX spectrometer for coincident positron-electron pairs emitted from moving high-Z nuclei, the J{sup pi} = 3{sup -} 2647 keV state in {sup 206}Pb was Coulomb excited in the {sup 206}Pb + {sup 206}Pb reaction at 5.9 MeV/u. The state was populated with a cross section of 62 mb per heavy ion and both the dominant 1844 keV El gamma decay and the 4.2 x 10{sup -4} internal pairs (IPC) branch were observed. The questions associated with IPC in high-Z systems and the prospects for future precision measurements will be discussed.
- OSTI ID:
- 255622
- Report Number(s):
- CONF-9510116--
- Journal Information:
- Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 10 Vol. 40; ISSN BAPSA6; ISSN 0003-0503
- Country of Publication:
- United States
- Language:
- English
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