Nuclear Data Sheets for A = 33

Chen, J.; Singh, Balraj

doi:10.1016/j.nds.2011.04.003

Cited by 41 publications

(31 citation statements)

References 284 publications

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“…The γ decay of the second excited state of 30 S to the ground state has been observed for the first time in the decay of 31 Ar. The relative intensities of the γ lines corresponding to this decay and the decay to the first excited state have been found to be 0.63 (21).…”

Section: Discussionmentioning

confidence: 87%

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Relative proton andγwidths of astrophysically important states in30S studied in theβ-delayed decay of
Koldste
¹
,
Blank
²
,
Borge
³

et al. 2013
Phys. Rev. C

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Resonances just above the proton threshold in 30 S affect the 29 P(p, γ ) 30 S reaction under astrophysical conditions. The (p,γ )-reaction rate is currently determined indirectly and depends on the properties of the relevant resonances. We present here a method for finding the ratio between the proton and γ partial widths of resonances in 30 S. The widths are determined from the β2p-and βpγ -decay of 31 Ar, which is produced at the ISOLDE radioactive ion beam facility at the European research organization CERN. Experimental limits on the ratio between the proton and γ partial widths for astrophysical relevant levels in 30 S have been found for the first time. A level at 4689.2(24) keV is identified in the γ spectrum, and an upper limit on the p / γ ratio of 0.26 (95% C.L.) is found. In the two-proton spectrum two levels at 5227(3) keV and 5847(4) keV are identified. These levels were previously seen to γ decay and upper limits on the γ / p ratio of 0.5 and 9, respectively, (95% C.L.) are found, where the latter differs from previous calculations.

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Section: Discussionmentioning

confidence: 87%

“…For calibration of DSSSD 3-6 three known levels of 33 Cl were used: 3971.24 (19), 4112.34 (20), and 5548.6(5) keV [21], corresponding to proton energies of 1642.8(5), 1779.5(5), and 3171.9(7) keV. DSSSD 2 has several broken strips and thus fewer counts.…”

Section: The Experimentsmentioning

confidence: 99%

Relative proton andγwidths of astrophysically important states in30S studied in theβ-delayed decay of
Koldste
¹
,
Blank
²
,
Borge
³

et al. 2013
Phys. Rev. C

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“…The ratio of IV/IS at the beginning and the end of the shell is therefore ±(e π − e ν )/(e π + e ν ) = ± . Also for this comparison a more detailed validation of the shell-model predictions is needed, and measurements of other sd shell nuclei such as 21 Mg, 25 Si, or 29 S are suggested to be performed. , ± 2 nuclei in the sd shell.…”

Section: -5mentioning

confidence: 99%

“…On the other hand transitions between T = 3/2 states with different nucleons coupled to identical even-even intrinsic configurations will show single-particle character and sensitivity to subshell gaps. The latest results from γ -spectroscopy experiments are available for excited states in the T z = − 3 2 even-odd nuclei 25 Si and 29 S [7]. From these measurements, however, indirect evidence is found that the first two excited states in 25 Si and 29 33 Ar were studied after neutron removal reactions [9].…”

Section: Introductionmentioning

confidence: 99%

“…The latest results from γ -spectroscopy experiments are available for excited states in the T z = − 3 2 even-odd nuclei 25 Si and 29 S [7]. From these measurements, however, indirect evidence is found that the first two excited states in 25 Si and 29 33 Ar were studied after neutron removal reactions [9]. The spin-parity assignments of evenparity states of 33 Ar are proposed, whereas no lifetime information of excited states or transition strength values is available.…”

Section: Introductionmentioning

confidence: 99%

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Isospin symmetry in thesdshell: Transition strengths in the neutron-deficientsdshell nucleusAr33
Wendt
¹
,
Taprogge²,
Reiter
³

et al. 2014
Phys. Rev. C
6
1
5
0
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Reduced transition strengths of the deexciting transitions from the first two excited states in 33 Ar were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary 36 Ar beam on a 9 Be target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The 33 Ar beam hit a secondary 197 Au target with an energy of approximately 145 MeV/nucleon. An array of high-purity germanium cluster detectors and large-volume BaF 2 scintillator detectors were employed for γ -ray spectroscopy at the secondary target position. The Lund-York-Cologne Calorimeter was used to track the outgoing ions and to identify the nuclear reaction channels. For the two lowest energy excited states of 33 Ar the reduced transition strengths have been determined. With these first results the T z = −3/2 nucleus 33 Ar is now, together with 21 Na (T z = −1/2), the only neutron-deficient odd-A sd shell nucleus in which experimental transition strengths are available.The experimental values are compared to results of shell-model calculations which describe simultaneously mirror-energy differences and transition-strength values of mirror pairs in the sd shell in a consistent way.

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Excited Nuclear States for Ne-33 (Neon)

Sukhoruchkin

Soroko

2012

Nuclei With Z = 1 - 29

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Nuclear Data Sheets for A = 33

Cited by 41 publications

References 284 publications

Relative proton andγwidths of astrophysically important states in30S studied in theβ-delayed decay of
Koldste
¹
,
Blank
²
,
Borge
³

et al. 2013
Phys. Rev. C

Relative proton andγwidths of astrophysically important states in30S studied in theβ-delayed decay of
Koldste
¹
,
Blank
²
,
Borge
³

et al. 2013
Phys. Rev. C

Isospin symmetry in thesdshell: Transition strengths in the neutron-deficientsdshell nucleusAr33
Wendt
¹
,
Taprogge²,
Reiter
³

et al. 2014
Phys. Rev. C
6
1
5
0
View full text Add to dashboard Cite

Excited Nuclear States for Ne-33 (Neon)

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Nuclear Data Sheets for A = 33

Cited by 41 publications

References 284 publications

Relative proton andγwidths of astrophysically important states in30S studied in theβ-delayed decay ofKoldste1, Blank2, Borge3 et al. 2013Phys. Rev. C

Relative proton andγwidths of astrophysically important states in30S studied in theβ-delayed decay ofKoldste1, Blank2, Borge3 et al. 2013Phys. Rev. C

Isospin symmetry in thesdshell: Transition strengths in the neutron-deficientsdshell nucleusAr33Wendt1, Taprogge2, Reiter3 et al. 2014Phys. Rev. C6150View full textAdd to dashboardCite

Excited Nuclear States for Ne-33 (Neon)

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Relative proton andγwidths of astrophysically important states in30S studied in theβ-delayed decay of
Koldste
¹
,
Blank
²
,
Borge
³

et al. 2013
Phys. Rev. C

Relative proton andγwidths of astrophysically important states in30S studied in theβ-delayed decay of
Koldste
¹
,
Blank
²
,
Borge
³

et al. 2013
Phys. Rev. C

Isospin symmetry in thesdshell: Transition strengths in the neutron-deficientsdshell nucleusAr33
Wendt
¹
,
Taprogge²,
Reiter
³

et al. 2014
Phys. Rev. C
6
1
5
0
View full text Add to dashboard Cite