New neutron-deficient isotopes 83Nb and 85Nb

Kuroyanagi, T.; Mitarai, S.; Min, Byung Joo; Tomura, H.; Haruta, Yohei; Heiguchi, K.; Suematsu, S.; Onizuka, Yoshihiko

doi:10.1016/0375-9474(88)90072-3

Cited by 28 publications

(35 citation statements)

References 6 publications

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“…These are considered and combined with a modified mass value for 83 Nb and illustrated by a black upfacing triangle, in agreement with the rather large uncertainty of the AME2003 value determined by Ref. [105]. Due to these open questions of isomerism this region should be addressed in a future measurement for final unambiguous mass-to-state assignments.…”

Section: Observations In Nuclear Structurementioning

confidence: 71%

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Mass measurements in the vicinity of ther p-process and theν p-process paths with the Penning trap facilities JYFLTRAP and SHIPTRAP

Weber¹,

Elomaa²,

Ferrer³

et al. 2008

Phys. Rev. C

124

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The masses of very neutron-deficient nuclides close to the astrophysical rp-and νp-process paths have been determined with the Penning trap facilities JYFLTRAP at JYFL/Jyväskylä and SHIP-TRAP at GSI/Darmstadt. Isotopes from yttrium (Z = 39) to palladium (Z = 46) have been produced in heavy-ion fusion-evaporation reactions. In total 21 nuclides were studied and almost half of the mass values were experimentally determined for the first time:88 Tc,

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Section: Observations In Nuclear Structurementioning

confidence: 71%

“…Triggered by an inconsistency in the Q β value for 85 Nb given in Ref. [105], the AME2003 mass value was recalculated and is now shifted by 70 keV to a less bound value (light grey circle). Furthermore, the presence of long-lived isomeric states can obscure the interpretation of results from mass measurements.…”

Section: Observations In Nuclear Structurementioning

confidence: 99%

Mass measurements in the vicinity of ther p-process and theν p-process paths with the Penning trap facilities JYFLTRAP and SHIPTRAP

Weber¹,

Elomaa²,

Ferrer³

et al. 2008

Phys. Rev. C

124

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“…Recoiled reaction products were captured by a gold foil on a 220 mm~b aluminum disk placed 2 mm downstream from the target [ 16]. A 97.3% enriched 54Fe target of 0.8 mg/cm 2 thickness with 2 mg/cm 2 gold backing was made by electroplating.…”

Section: Methodsmentioning

confidence: 99%

The ? decay of the new isotope79Y

Mukai

Odahara

Nakatani

et al. 1992

Z. Physik A - Hadrons and Nuclei

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The neutron deficient isotope 79y has been firstly identified and the decay properties were studied from ]/-decay measurements in the reaction of 54Fe(28Si, p2n) at 92MeV. Three 7 rays of 152.5, 177.4, and 1106 keV were observed concerning the fl decay. The half life and QEC value were determined to be 14.9+0.6 s and 7.12_+0.45 MeV, respectively. The decay scheme including spin-parity is discussed, and 5/2 + assignment for the ground state is proposed.

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“…Several unknown γ-rays were found with energies of 166, 272, 423, 434, 484, 532, 538, 590, 610, 660, 709, and 759 keV at A = 85. The most intense, 759-keV γ transition had a half-life of 12(5) s agreeing with the beta-decay half-life of 85 Zr m (T 1/2 = 10.9(3) s [44]), and disagreeing with the half-lives of 85 Mo (T 1/2 = 3.2(2) s [45]) and 85 Nb (T 1/2 = 20.9(7) s [46]). However, the transition could not be associated with the beta decay of 85 Zr m since such an intense transition should have been observed in the detailed beta-decay study of Ref.…”

Section: T = 1 Triplet At a = 58mentioning

confidence: 82%

“…Recently, a Q EC value for the beta decay of 58 Cu has been precisely determined at JYFLTRAP [18]. When this new Q EC value is combined with the branching ratio of 81.1(4) % (from the values of 80.8(7) % [23], 81.2(5) % [24] and 82(3) % [25]) and a half-life of 3.204 (7) s [26] for 58 Cu, a Gamow-Teller strength B(GT ) = 0.08285 (46) and a squared Gamow-Teller matrix element στ 2 = 0.05141(33) are obtained. The values are little higher and more precise than previously (c.f.…”

Section: T = 1 Triplet At a = 58mentioning

confidence: 99%

Isomer and decay studies for the rp process at IGISOL

et al. 2012

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This article reviews the decay studies of neutron-deficient nuclei within the mass region A = 56 − 100 performed at the Ion Guide Isotope Separator On-Line (IGISOL) facility in the University of Jyväskylä over last 25 years. Development from He-jet measurements to on-line mass spectrometry, and eventually to atomic mass measurements and post-trap spectroscopy at IGISOL, has yielded studies of around 100 neutron-deficient nuclei over the years. The studies form a solid foundation to astrophysical rp-process path modelling. The focus is on isomers studied either via spectroscopy or via Penning-trap mass measurements. The review is complemented with recent results on the ground and isomeric states of 90 Tc. The excitation energy of the low-spin isomer in 90 Tc has been measured as Ex = 144.1(17) keV with JYFLTRAP double Penning trap and the ground state of 90 Tc has been confirmed to be the (8 + ) state with a half-life of T 1/2 = 49.2(4) s. Finally, the mass-excess results for the spin-gap isomers 53 Co m and 95 Pd m and implications from the JYFLTRAP mass measurements for the (21 + ) isomer in 94 Ag are discussed. PACS. 23.40.-s Beta decay -21.10.-k Properties of nuclei; nuclear energy levels

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New neutron-deficient isotopes 83Nb and 85Nb

Cited by 28 publications

References 6 publications

Mass measurements in the vicinity of ther p-process and theν p-process paths with the Penning trap facilities JYFLTRAP and SHIPTRAP

Mass measurements in the vicinity of ther p-process and theν p-process paths with the Penning trap facilities JYFLTRAP and SHIPTRAP

The ? decay of the new isotope79Y

Isomer and decay studies for the rp process at IGISOL

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