Nuclear Data Sheets for A ;eq 124

Iimura, H.; Katakura, J.; Kitao, K.; Tamura, Tsutomu

doi:10.1006/ndsh.1997.0009

Cited by 69 publications

(51 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The 5 − states are µs isomers in 116 Sn [46] and 124 Sn [47] only, but these are ns isomers in the other even-A 118-122,128-130 Sn nuclei [48][49][50][51][52] because they can decay by E1 transitions to the 4 + states lying just below them. However, in the odd-A isotopes, the 19/2 + states are all isomeric in the µs range because each of them comes below the (4 + ⊗ νh 11/2 )17/2 − and 19/2 − states.…”

Section: Level Systematicsmentioning

confidence: 99%

New sub-μs isomers in125,127,129Snand isomer systematics of
Lozeva¹,
Simpson²,
Grawe³
et al. 2008
Phys. Rev. C

View full text Add to dashboard Cite

New sub-µs isomers have been observed in the neutron-rich Sn isotopes. 125,127,129 Sn nuclei have been produced in a relativistic fission reaction of 238 U on a 9 Be target at 750 A·MeV and by the fragmentation of 136 Xe at 600 A·MeV populating high-spin yrast states. In addition to the already known µs isomers, three new ones with sub-µs half-lives have been observed. These yrast isomers are the high-spin members of the ν(d −1 3/2 h −2 11/2 ) and νh −n 11/2 , seniority v = 3 multiplets leading to isomeric (23/2 + ) and (27/2 − ) states, respectively. Added to the already known 19/2 + µs isomers in this region the current work completes the systematic information of neutron-hole excitations toward the filling of the last h 11/2 orbital at N = 82. The results are discussed in the framework of state-of-the-art shell-model calculations using realistic interactions.

show abstract

Section: Level Systematicsmentioning

confidence: 99%

New sub-μs isomers in125,127,129Snand isomer systematics of
Lozeva¹,
Simpson²,
Grawe³
et al. 2008
Phys. Rev. C

View full text Add to dashboard Cite

show abstract

“…First, because it was not included in the finetuning, and in addition, the experimental data available is not very clear about the first excited 0 + state, which is very important for our analysis. In particular, although the recent double-beta decay experimental studies [28][29][30] assume that this state is at 1.156 MeV excitation energy, the latest Nuclear Data Sheets [71,72] Fig. 1).…”

Section: A Energy Levelsmentioning

confidence: 99%

Shell model predictions forSn124double-βdecay

Horoi¹,

Neacsu²

2016

Phys. Rev. C

129

194

View full text Add to dashboard Cite

Neutrinoless double-beta (0νββ) decay is a promising beyond Standard Model process. Twoneutrino double-beta (2νββ) decay is an associated process that is allowed by the Standard Model, and it was observed in about 10 isotopes, including decays to the excited states of the daughter.124 Sn was the first isotope whose double-beta decay modes were investigated experimentally, and despite few other recent efforts, no signal has been seen so far. Shell model calculations were able to make reliable predictions for 2νββ decay half-lives. Here we use shell model calculations to predict the 2νββ decay half-life of 124 Sn. Our results are quite different from the existing quasiparticle randomphase approximation (QRPA) results, and we envision that they will be useful for guiding future experiments. We also present shell model nuclear matrix elements for two potentially competing mechanisms to the 0νββ decay of 124 Sn.

show abstract

“…This normalization factor was used for every other measured inelastic scattering cross section. The calculations for different 2 + excited states performed using the standard collective form factor and the adopted B(E2)↑ [22,23] were able to reproduce well the experimental data. For the 1 − pygmy states, a calculation including both the Coulomb and nuclear contributions and corresponding to a form factor of GDR type is shown in Fig.…”

Section: Resultsmentioning

confidence: 64%

Isospin Character of Low-lying Pygmy Dipole States Probed via Inelastic Scattering of $^{17}$O

Crespi¹,

Bracco²,

Pellegri³

2015

Acta Phys. Pol. B

View full text Add to dashboard Cite

The pygmy dipole states were populated in 208 Pb and 124 Sn by the inelastic scattering of a 17 O beam at the energy of 20 MeV/u, and their subsequent gamma decay was measured with the AGATA demonstrator array. Differential cross sections as a function of the angle were measured. The results are compared with (γ, γ ) data. For the dipole transitions, a form factor obtained by folding a microscopically calculated transition density was used. This has allowed us to extract the isoscalar component of the 1 − excited states.

show abstract

Nuclear Data Sheets for A ;eq 124

Cited by 69 publications

References 0 publications

New sub-μs isomers in125,127,129Snand isomer systematics of
Lozeva¹,
Simpson²,
Grawe³
et al. 2008
Phys. Rev. C

New sub-μs isomers in125,127,129Snand isomer systematics of
Lozeva¹,
Simpson²,
Grawe³
et al. 2008
Phys. Rev. C

Shell model predictions forSn124double-βdecay

Isospin Character of Low-lying Pygmy Dipole States Probed via Inelastic Scattering of $^{17}$O

Contact Info

Product

Resources

About

Nuclear Data Sheets for A ;eq 124

Cited by 69 publications

References 0 publications

New sub-μs isomers in125,127,129Snand isomer systematics ofLozeva1, Simpson2, Grawe3 et al. 2008Phys. Rev. C

New sub-μs isomers in125,127,129Snand isomer systematics ofLozeva1, Simpson2, Grawe3 et al. 2008Phys. Rev. C

Shell model predictions forSn124double-βdecay

Isospin Character of Low-lying Pygmy Dipole States Probed via Inelastic Scattering of $^{17}$O

Contact Info

Product

Resources

About

New sub-μs isomers in125,127,129Snand isomer systematics of
Lozeva¹,
Simpson²,
Grawe³
et al. 2008
Phys. Rev. C

New sub-μs isomers in125,127,129Snand isomer systematics of
Lozeva¹,
Simpson²,
Grawe³
et al. 2008
Phys. Rev. C