THE 1330 kev RESONANCE LEVEL OF THE Be$sup 9$(p,$gamma$)B$sup 10$ REACTION AND EXCITED STATES OF B$sup 1$$sup 0$
A broad resonance ( GAMMA /sub lab/ = 383 kev) was observed around E / sub p/ = 1330 kev in the measurement of excitation function of the Be/sup 9/(p, gamma )B/sup 10/ reaction in the proton energy region from 1200 to 1900 kev. At this level, 7.78 Mev gamma ray ( gamma /sub o/) was predominant (783%) among the capture gamma rays, and its angular distribution was isotropic within the experimental error. Obtained GAMMA /sub gamma / was 14.6 plus or minus 1.5 ev. These results support the assigmment 2/sup -/ to this level, but the strong E1 transition to the ground state should suggest a large admixture of isotopic spin impurity of T = 1 in T = 0 at this level. The branching ratio of decaying gamma rays, the angular distribution and the large isotopic spin admixture are interpreted by the jj-coupling shell model, and the 1330 kev level is identified as a weak coupling s-wave proton resonance analogous to the 330 kev level. On the basis of this identification, other broad levels at E/sub x/ = 7.20, 8.07, the core (Be/sup 9/ or B/sup 9/) excitation of B/sup 10/ nucleus, and J pi and T of these levels are tentatively assigned. (auth)
- Research Organization:
- Electrotechnical Lab., Tokyo
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-17-041902
- OSTI ID:
- 4685361
- Journal Information:
- J. Phys. Soc. Japan, Journal Name: J. Phys. Soc. Japan Vol. Vol: 18
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
ANGULAR DISTRIBUTION
BERYLLIUM 9
BORON 10
BRANCHING RATIO
CAPTURE
CROSS SECTIONS
DECAY
ENERGY LEVELS
ENERGY RANGE
ERRORS
EXCITATION
GAMMA RADIATION
IMPURITIES
INTERACTIONS
ISOSPIN
J-J COUPLING
LIFETIME
MEASURED VALUES
MEV RANGE
NUCLEAR MODELS
NUCLEAR REACTIONS
ORBITS
PARITY
PHYSICS
PROTON BEAMS
QUANTUM MECHANICS
RESONANCE
S-WAVE
SCATTERING
SHELL MODELS
SPIN
BERYLLIUM 9
BORON 10
BRANCHING RATIO
CAPTURE
CROSS SECTIONS
DECAY
ENERGY LEVELS
ENERGY RANGE
ERRORS
EXCITATION
GAMMA RADIATION
IMPURITIES
INTERACTIONS
ISOSPIN
J-J COUPLING
LIFETIME
MEASURED VALUES
MEV RANGE
NUCLEAR MODELS
NUCLEAR REACTIONS
ORBITS
PARITY
PHYSICS
PROTON BEAMS
QUANTUM MECHANICS
RESONANCE
S-WAVE
SCATTERING
SHELL MODELS
SPIN