Ground state M1 strengths of d-15/2 levels in 39K

R. Moreh; W. M. Sandefur; W. C. Sellyey; D. C. Sutton; B. H. Wildenthal

doi:10.1103/PhysRevC.37.2428

Ground state M1 strengths of d^-1_5/2levels in ³⁹K

R. Moreh, W. M. Sandefur, W. C. Sellyey, D. C. Sutton, B. H. Wildenthal

Research output: Contribution to journal › Article › peer-review

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Abstract

Resonant photon scattering from ³⁹K has been studied with bremsstrahlung produced by electrons with end-point energies of 6.6, 8.5, and 9.4 MeV. Values of gΓ²₀/Γ for 24 levels below 9 MeV were measured and the gΓ₀ values of 17 levels were deduced. The widths of some levels above 4 MeV were found to be much larger (on the average, more than a factor of 10) than those reported from experiments using the Doppler shift attenuation method. Three of these levels are known from studies of the (d,³He) reaction to carry most of the d^-1_5/2 proton strength in ³⁹K. The B(M1↑) strength of J=(5/2⁺ levels below 7 MeV is compared with predictions based on simple single-particle shell-model wave functions coupled with free-nucleon and empirically renormalized M1 operators and weighted by single-proton pickup spectroscopic factors.

Original language	English
Pages (from-to)	2428-2434
Number of pages	7
Journal	Physical Review C - Nuclear Physics
Volume	37
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.37.2428
State	Published - 1 Jan 1988
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevC.37.2428

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title = "Ground state M1 strengths of d-15/2 levels in 39K",

abstract = "Resonant photon scattering from 39K has been studied with bremsstrahlung produced by electrons with end-point energies of 6.6, 8.5, and 9.4 MeV. Values of gΓ20/Γ for 24 levels below 9 MeV were measured and the gΓ0 values of 17 levels were deduced. The widths of some levels above 4 MeV were found to be much larger (on the average, more than a factor of 10) than those reported from experiments using the Doppler shift attenuation method. Three of these levels are known from studies of the (d,3He) reaction to carry most of the d-15/2 proton strength in 39K. The B(M1↑) strength of J=(5/2+ levels below 7 MeV is compared with predictions based on simple single-particle shell-model wave functions coupled with free-nucleon and empirically renormalized M1 operators and weighted by single-proton pickup spectroscopic factors.",

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T1 - Ground state M1 strengths of d-15/2 levels in 39K

AU - Moreh, R.

AU - Sandefur, W. M.

AU - Sellyey, W. C.

AU - Sutton, D. C.

AU - Wildenthal, B. H.

PY - 1988/1/1

Y1 - 1988/1/1

N2 - Resonant photon scattering from 39K has been studied with bremsstrahlung produced by electrons with end-point energies of 6.6, 8.5, and 9.4 MeV. Values of gΓ20/Γ for 24 levels below 9 MeV were measured and the gΓ0 values of 17 levels were deduced. The widths of some levels above 4 MeV were found to be much larger (on the average, more than a factor of 10) than those reported from experiments using the Doppler shift attenuation method. Three of these levels are known from studies of the (d,3He) reaction to carry most of the d-15/2 proton strength in 39K. The B(M1↑) strength of J=(5/2+ levels below 7 MeV is compared with predictions based on simple single-particle shell-model wave functions coupled with free-nucleon and empirically renormalized M1 operators and weighted by single-proton pickup spectroscopic factors.

AB - Resonant photon scattering from 39K has been studied with bremsstrahlung produced by electrons with end-point energies of 6.6, 8.5, and 9.4 MeV. Values of gΓ20/Γ for 24 levels below 9 MeV were measured and the gΓ0 values of 17 levels were deduced. The widths of some levels above 4 MeV were found to be much larger (on the average, more than a factor of 10) than those reported from experiments using the Doppler shift attenuation method. Three of these levels are known from studies of the (d,3He) reaction to carry most of the d-15/2 proton strength in 39K. The B(M1↑) strength of J=(5/2+ levels below 7 MeV is compared with predictions based on simple single-particle shell-model wave functions coupled with free-nucleon and empirically renormalized M1 operators and weighted by single-proton pickup spectroscopic factors.

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Ground state M1 strengths of d^-1_5/2levels in ³⁹K

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