THE REACTION $sup 7$Li($alpha$$gamma$$)$$sup 11$B
The gamma rays following excitation by the Li/sup 7/( alpha , gamma )B/ sup 11/ reaction of levels in B/sup 11/ at 9.28, 9.19, and 8.93 Mev were studied with sodium iodide scintillation counters and a scintillation pair spectrometer. The decay schemes of these levels were elucidated and angular distributions of some of the gamma rays were measured. From these data, and a consideration of the reaction widths of the levels in B/sup 11/, assignments of spins and parities were made. In particular it was established that the characteristics of the 4.46 Mev and 9.28 Mev levels in B/sup 11/ are -5/2 and +5/2 respectively, and that the M1 radiation from the 4.46 Mev level is mixed with a small proportion of E2 radiation. (auth)
- Research Organization:
- Cavendish Lab., Cambridge, Eng.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-14-000960
- OSTI ID:
- 4214419
- Journal Information:
- Phil. Mag., Journal Name: Phil. Mag. Vol. Vol: (8) 4
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
ALPHA BEAMS-- BORON 11-- GAMMA RADIATION-- LITHIUM 7-- MEASURED VALUES-- NUCLEAR REACTIONS
ANGULAR DISTRIBUTION-- BORON 11-- DECAY-- ENERGY LEVELS-- EXCITATION-- GAMMA RADIATION-- MEASURED VALUES-- PARITY
DIPOLES-- GAMMA RADIATION-- MAGNETIC MOMENTS-- MEASURED VALUES-- MULTIPOLARITY-- MULTIPOLE RADIATION-- RADIATIONS
ELECTRIC MOMENTS-- GAMMA RADIATION-- MEASURED VALUES-- MULTIPOLARITY-- MULTIPOLE RADIATION-- QUADRUPOLES-- RADIATIONS
GAMMA SPECTROMETERS-- MEASURED VALUES-- PAIR PRODUCTION-- SCINTILLATION COUNTERS
MEASURED VALUES-- SCINTILLATION COUNTERS-- SODIUM IODIDES
PHYSICS
ANGULAR DISTRIBUTION-- BORON 11-- DECAY-- ENERGY LEVELS-- EXCITATION-- GAMMA RADIATION-- MEASURED VALUES-- PARITY
DIPOLES-- GAMMA RADIATION-- MAGNETIC MOMENTS-- MEASURED VALUES-- MULTIPOLARITY-- MULTIPOLE RADIATION-- RADIATIONS
ELECTRIC MOMENTS-- GAMMA RADIATION-- MEASURED VALUES-- MULTIPOLARITY-- MULTIPOLE RADIATION-- QUADRUPOLES-- RADIATIONS
GAMMA SPECTROMETERS-- MEASURED VALUES-- PAIR PRODUCTION-- SCINTILLATION COUNTERS
MEASURED VALUES-- SCINTILLATION COUNTERS-- SODIUM IODIDES
PHYSICS