Rotational and vibrational excitations in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>84</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi mathvariant="normal">Zr</mml:mi></mml:math>studied through in-beam and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>84</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi mathvariant="normal">Nb</mml:mi></mml:math>β-dec

Döring, J.; Kaye, R. A.; Aprahamian, A.; Cooper, M. W.; Daly, J.; Haan, R. C. de; Lesher, S. R.; Ressler, J. J.; Seweryniak, D.; Stech, E.; Susalla, A.; Tabor, S. L.; Uusitalo, J.; Walters, W. B.; Wiescher, M.

doi:10.1103/physrevc.67.014315

Cited by 18 publications

(5 citation statements)

References 39 publications

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“…The second 2 + state has not been observed before in any molybdenum isotope with N 46. However, positive-parity states similar to the sequences in 86,88 Mo have been observed in the N = 44 isotones 80 Kr [26], 82 Sr [27], and 84 Zr [25], as well as in the N = 46 isotones 82 Kr [28], 84 Sr [29], and 86 Zr [24,30]. Although the Mo isotopes show great similarities to each other, the resemblance to the N = 44, 46 isotonic chains with different proton numbers is even more striking.…”

Section: B 88 Mosupporting

confidence: 56%

“…The asymmetry of the 541 and the 567 keV transitions of < 0.06 supports a dipole character for these transitions. We suggest a tentative spin and parity I π = 6 − for the two states decaying with 541 keV and 567 keV, based on the systematics in this region [2,24,25]. The statistics were insufficient for DCO ratios and polarization measurements for the γ -ray transitions between the higher-lying states in this structure, for which spin assignments are tentative.…”

Section: B 88 Momentioning

confidence: 83%

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Low-spin collective behavior in the transitional nucleiMo86,88

et al. 2007

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Low-spin structures in 86,88 Mo were populated using the 58 Ni( 36 Ar, xαyp) heavy-ion fusion-evaporation reaction at a beam energy of 111 MeV. Charged particles and γ rays were emitted in the reactions and detected by the DIAMANT CsI ball and the EXOGAM Ge array, respectively. In addition to the previously reported low-to-medium spin states in these nuclei, new low-spin structures were observed. Angular correlation and linear polarization measurements were performed in order to unambiguously determine the spins and parities of intensely populated states in 88 Mo. Quasiparticle Random Phase Approximation (QRPA) calculations were performed for the first and second excited 2 + states in 86 Mo and 88 Mo. The results are in qualitative agreement with the experimental results, supporting a collective interpretation of the low-spin states for these transitional nuclei.

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Section: B 88 Mosupporting

confidence: 56%

Section: B 88 Momentioning

confidence: 83%

Low-spin collective behavior in the transitional nucleiMo86,88

et al. 2007

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“…Compared to the yrast band, band 10 shows an alignment gain of ∼4h, so it is assumed to be configured by two quasiparticles. As more two-quasineutron structures are not expected below bands 3,4,5 [41][42][43][44][45], and assigned to noncollective νg 9/2 ,(p 1/2 ,f 5/2 ) configurations [45]. In Pd isotopes with proton number Z = 46, analogous two-quasiproton excitations can be expected.…”

Section: The Low-spin Negative-parity Statesmentioning

confidence: 86%

“…The γ softness in the Pd and Ru isotopes can be compared by deducing the energy ratio E(2 + 2 )/E(4 + 1 ). In terms of the γ -fluctuating triaxial rotor model [45,50], the γ softness of the potential is represented by the energy of the second 2 + state relative to that of the yrast 4 + state: the softer the nucleus, the lower the 2 Fig. 9.…”

Section: E the Quasi-γ Bands 7 Andmentioning

confidence: 99%

High-spin structure of104Pd

et al. 2012

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The high-spin structure of the nucleus 104 Pd was studied through the 96 Zr( 13 C,5n) reaction at incident energies of 51 and 58 MeV, using the Euroball IV γ -ray spectrometer in conjunction with the DIAMANT charged-particle array. Several new medium-and high-spin bands were revealed. The already known positive-parity yrast and the negative-parity cascades were extended up to E x ∼ 13, ∼ 11, and ∼ 9 MeV with I π = (26 + ), I π = (23 − ), and (20 − ), respectively. The deduced band structures were compared with Woods-Saxon total Routhian surface (TRS) calculations. In addition, non-yrast low-lying positive-parity bands were identified, which were assigned to soft γ -vibrational excitations.

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“…Additionally, a 1 + assignment would allow direct transitions into the the 0 + 84 Zr ground state and explain the lack of evidence in Fig. 7 for previously observed states populated via 84 Nb β decay [31]. Based on the simplistic assumption that 100% of the 84 Nb β-decays feed excited states in 84 Zr that depopulate through the known 2 + 1 level at 540.0 keV, we expected to observe a total of 14 (9) counts at this energy in Fig.…”

Section: Resultsmentioning

confidence: 89%

$β$-Decay Half-Life of the $rp$-Process Waiting Point Nuclide $^{84}$Mo

Stoker,

Mantica,

Bazin

et al. 2009

Preprint

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A half-life of 2.2 ± 0.2 s has been deduced for the ground-state β decay of 84 Mo, more than 1σ shorter than the previously adopted value. 84 Mo is an even-even N = Z nucleus lying on the proton dripline, created during explosive hydrogen burning in Type I X-ray bursts in the rapid proton capture (rp) process. The effect of the measured half-life on rp-process reaction flow is explored. Implications on theoretical treatments of nuclear deformation in 84 Mo are also discussed. FIG. 1: Yrast states up to 8 + in even-even N = Z nuclei. The transition energies are given in MeV. R 4/2 ratios are shown just below 0 + state. Taken from [10, 11].

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Rotational and vibrational excitations in84Zrstudied through in-beam and84Nbβ-dec

Cited by 18 publications

References 39 publications

Low-spin collective behavior in the transitional nucleiMo86,88

Low-spin collective behavior in the transitional nucleiMo86,88

High-spin structure of104Pd

$β$-Decay Half-Life of the $rp$-Process Waiting Point Nuclide $^{84}$Mo

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