Orbital recoupling dominance in the A = 20 isovector giant M1 transition

Journal Article · Mon Apr 06 04:00:00 EST 1981 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.46.891· OSTI ID:6404884

Martoff, C J; Bistirlich, J A; Crowe, K M; Koike, M; Miller, J P; Rosenblum, S S; Zajc, W A; Baer, H W; Wapstra, A H; Strassner, G; Truoel, P

The photon spectrum from /sup 20/Ne(0/sup -/,..gamma..)/sup 20/F has been measured. The branching ratio to /sup 20/F(1/sup +/,1.06 MeV) is compared to the analogous M1 decay width /sup 20/Ne(1/sup +/,11.24 MeV)..-->../sup 20/Ne(g.s.). This determines the relative importance of spin and orbital magnetization in the transition amplitude. The M1 amplitude is found to contain only (47 +- 16)% spin flip, in agreement with shell-model calculations. Excitation of 2/sup -/ states by /sup 20/Ne(..pi../sup -/,..gamma..) is also observed.

• Research Organization: Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6404884
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 46:14; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BRANCHING RATIO
CAPTURE
CHARGED-PARTICLE REACTIONS
ELECTRON REACTIONS
ENERGY-LEVEL TRANSITIONS
FLUORINE 20
FLUORINE ISOTOPES
GAMMA SPECTRA
GIANT RESONANCE
HADRON REACTIONS
INELASTIC SCATTERING
ISOTOPES
LEPTON REACTIONS
LIGHT NUCLEI
M1-TRANSITIONS
MATHEMATICAL MODELS
MATRIX ELEMENTS
MEASURING INSTRUMENTS
MESON REACTIONS
MULTIPOLE TRANSITIONS
MULTIWIRE PROPORTIONAL CHAMBERS
NEON 20 TARGET
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
ODD-ODD NUCLEI
PARITY
PARTICLE PROPERTIES
PION MINUS REACTIONS
PION REACTIONS
PROPORTIONAL COUNTERS
RADIATION DETECTORS
RADIOISOTOPES
RESONANCE
SCATTERING
SECONDS LIVING RADIOISOTOPES
SHELL MODELS
SPECTRA
SPIN
TARGETS