Strengths of electromagnetic transitions between bound states for a &lt; 45

Endt, P.M.; Leun, C. van der

doi:10.1016/0375-9474(74)90177-8

Cited by 115 publications

(15 citation statements)

References 54 publications

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“…[13]. This situation is very similar to that in 42Ca where the 6 + ~ 4 + E2 transition is weaker than the 4 + ~ 2 + transition by a factor of 16 -+ 5 [9].…”

Section: + 251rk(bzlllc) + 52rk(bl1llc))/( 1 + 52) (1)supporting

confidence: 74%

“…In a least-squares analysis of the angular distribution of transition b ~ c one usually calculates X 2, for [3] are less than 3% at the 95% confidence level. The mean life and decay exclude for the 1822 keV transition octupole radiation and restrict [9] and M2 admixture to have an intensity of<3% (i.e. arctg 6 < 9°).…”

Section: + 251rk(bzlllc) + 52rk(bl1llc))/( 1 + 52) (1)mentioning

confidence: 99%

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An unambiguous Jπ assignment from γ-rays produced in heavy-ion reactions; The lowest J=6+, 38Ar level

et al. 1975

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“…[13]. This situation is very similar to that in 42Ca where the 6 + ~ 4 + E2 transition is weaker than the 4 + ~ 2 + transition by a factor of 16 -+ 5 [9].…”

Section: + 251rk(bzlllc) + 52rk(bl1llc))/( 1 + 52) (1)supporting

confidence: 74%

Section: + 251rk(bzlllc) + 52rk(bl1llc))/( 1 + 52) (1)mentioning

confidence: 99%

An unambiguous Jπ assignment from γ-rays produced in heavy-ion reactions; The lowest J=6+, 38Ar level

et al. 1975

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“…The analysis of the angular distribution data was performed by a standard 7~ z fitting technique where values above the 0.1 ~o limit were rejected. Spin and parity values J~ were also rejected if the resultant transition strengths F~/Fw, where F w is the Weisskopf estimate, exceeded the recommended upper limits by Endt and Van der Leun [25]. These limits are given for A<45, but since no distinct A-dependence has been found we assume that the limits are also valid for A=55.…”

Section: Excited Levelsmentioning

confidence: 98%

Excited levels and isobaric analogue states in55Co investigated with the54Fe(p, ?)55Co reaction

Erlandsson

Lyttkens

1977

Z Physik A

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The yield curve for the S4Fe(p, 7)~5Co reaction in the energy region Ev= 1.5-2.9 MeV has been recorded and the decay of ten resonances has been investigated. For six of the resonances the strengths have been determined. The angular distributions of the gamma rays have been recorded for four resonances to obtain spins or spin limitations for excited levels. In addition the lifetimes of 10 bound levels were determined with the Doppler Shift Attenuation Method. The isobaric analogues of the ground state and five excited states in 55Fe are discussed.

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“…In the present work this is investigated for A = 28-32 nuclei by testing both ASDI and MSDI wave functions by the calculation of ,,-ray transition strengths and the properties derived from them like mixing ratios, lifetimes and branching ratios. Recent compilations [19,20] of experimentally well defined electromagnetic strengths yield about 85 E2 strengths and about 60 M I strengths in the A = 28-32 mass region. In the present study, a method derived by Timmer et al [8] is used to estimate the stability of the results against changes in the Hamiltonian.…”

Section: Decay Schemes and Transition Strengthsmentioning

confidence: 99%

Shell-model calculations inA=28?32 nuclei

et al. 1976

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Shell-model calculations for positive-parity levels of A = 28-32 nuclei have been performed in a lds/2 2sl/2 ld3/2 configuration space. Configuration mixing of at most 250 lowestlying pure configurations for each (A, J, T) set was taken into account. By a variation of the four effective interaction (MSDI) parameters and three single-particle energies a search was made for the best fit of the calculated energies to the experimental values. The average deviation between theory and experiment for the energies of the 110 fitted levels is 0.44 MeV. By adjusting all the 63 two-body matrix elements (ASDI) and the three single-particle energies, the average deviation of the binding energies was reduced to 0.16 MeV. For the lowest 10-15 levels in all A=28-32 nuclei a one to one correspondence exists between theory and experiment. Electromagnetic transition strengths were calculated both with MSDI and with ASDI wave functions. The ASDI wave functions reproduce the experimental E 2 data much better than the MSDI wave functions. For the M 1 transition strengths only a minor improvement has been achieved.

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Strengths of electromagnetic transitions between bound states for a < 45

Cited by 115 publications

References 54 publications

An unambiguous Jπ assignment from γ-rays produced in heavy-ion reactions; The lowest J=6+, 38Ar level

An unambiguous Jπ assignment from γ-rays produced in heavy-ion reactions; The lowest J=6+, 38Ar level

Excited levels and isobaric analogue states in55Co investigated with the54Fe(p, ?)55Co reaction

Shell-model calculations inA=28?32 nuclei

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