Isobaric analogue of the lowest 32− state of 45Ca

doi:10.1016/0375-9474(73)90438-7

Nuclear Physics A

Volume 211, Issue 3, 10 September 1973, Pages 486-492

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Abstract

The 8.113 and 8.130 MeV states of ⁴⁵Sc have been identified as the main components of the split isobaric analogue of the lowest $32^{−}$ state of ⁴⁵Ca. A group of ⁴⁵Sc levels around 4.5 MeV is strongly excited in the γ-decay. The total M1 strength has the expected order of magnitude.

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Cited by (8)

Nuclear Data Sheets for A = 45
2008, Nuclear Data Sheets
Nuclear data sheets update for A = 45
1992, Nuclear Data Sheets
Nuclear Data Sheets for A = 45
1983, Nuclear Data Sheets
The 1977 Nuclear Data Sheets for A=45 (77Be63) have been revised using experimental decay and reaction data received by the cutoff date noted below; other evaluations (70Le28 and 70LeZA), review papers, and compilations were also considered. Experimental data which have remained substantially unchanged since the last evaluation are so designated. Only limited use has been made of the weak arguments listed in the introduction to Nuclear Data Sheets.
In addition to the seven nuclides experimentally observed (⁴⁵Ar through ⁴⁵Cr), the nuclides ⁴⁵Mn and ⁴⁵Fe predicted by 75Be56 have been included in the present evaluation. Some recent theoretical papers have been briefly summarized in the present evaluation; however, there has been no attempt at completeness.
Nuclear data sheets for A = 45
1977, Nuclear Data Sheets
The γ-decay of the g<inf> 9 2</inf> analogue state in <sup>59</sup>Cu
1975, Nuclear Physics, Section A
An investigation of the γ-decay of the $1 g_{92}$ analogue state in ⁵⁹Cu has been performed using the ⁵⁸Ni(p, γ)⁵⁹Cu reaction. The (p, γ) excitation function has been taken in the range E_p = 3450–3650 keV. The decay schemes of the (p, γ) resonances at E_p = 3483, 3532 and 3547 keV, measured with Ge(Li) detectors, lead to eight new levels in ⁵⁹Cu with excitation energies between 1.8 and 4.7 MeV and to spin assignments of several states. The spins of the first two resonances are found to be ( $12$ , $32$ ) and ( $52$ ). The spin of the E_p = 3547 keV resonan is, from angular distributions, uniquely determined to be $J^{π} = 92^{+}$ and this state is found to be the unfragmented analogue state of the $E^{∗} = 3.062 MeV$ , $J^{π} = 92^{+}$ parent state in ⁵⁹Ni. The measured complete decay scheme of this resonance shows that its isovector M1 decay is in disagreement with all existing theoretical predictions.
The γ-decay of a p<inf> 3 2</inf> analogue state in <sup>51</sup>Mn
1974, Nuclear Physics, Section A
A high-accuracy investigation of the γ-decay of the E_p = 1059 and 1071 keV resonances in the reaction ⁵⁰Cr(p, γ)⁵¹Mn has been performed. The E_p = 1059 keV resonance is shown to be the analogue state corresponding to the E^∗ = 1899 keV, $J^{π} = 32$ ⁻ parent state in ⁵¹Cr. From (p, γ) angular distributions, mixing ratios of the primary γ-transitions depopulating this resonance and J^π values of many states populated in the γ-decay have been determined. The total γ-width of this 1059 keV resonance is found to be Γ_γ = 0.055 eV. The analogue-anti-analogue transition strength is 0.009 W.u. and fits well into our systematics of IAS → AIAS transitions in f-p shell nuclei. The main part of the M1 strength in the γ-decay of the IAS is absorbed in $12$ ⁻ and $32$ ⁻ core polarized states. A comparison of the level scheme of ⁵¹Mn obtained from the decay schemes of the (p, γ) resonances with calculations in the Coriolis strong coupling model shows evidence for a g.s. deformation of ⁵¹Mn.

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Isobaric analogue of the lowest 32− state of 45Ca

Abstract

Nucl. Phys.

Phys. Lett.

Phys. Lett.

Nucl. Phys.

Nucl. Phys.

Phys. Lett.

Nucl. Instr.

Nucl. Phys.

Isobaric analogue of the lowest $32^{−}$ state of ⁴⁵Ca