Nuclear Data Sheets for A = 94

Abriola, D.; Sonzogni, A. A.

doi:10.1016/j.nds.2006.08.001

Cited by 135 publications

(129 citation statements)

References 205 publications

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“…They decay predominantly via isomeric transition to the 6 + state which lies 146 keV lower in energy, whereas other competing processes are negligible [18]. Once the atoms are fully stripped, the decay channel by internal conversion is consequently shut off.…”

Section: Case Study: Lifetime Of 94m Ru 44+mentioning

confidence: 99%

Statistical approaches to lifetime measurements with restricted observation times

et al. 2017

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Two generic methods based on frequentism and Bayesianism are presented in this work aiming to adequately estimate decay lifetimes from measured data, while accounting for restricted observation times in the measurements. All the experimental scenarios that can possibly arise from the observation constraints are treated systematically and formulas are derived. The methods are then tested against the decay data of bare isomeric 94m Ru 44+ , which were measured using isochronous mass spectrometry with a timing detector at the CSRe in Lanzhou, China. Applying both methods in three distinct scenarios yields six different but consistent lifetime estimates. The deduced values are all in good agreement with a prediction based on the neutral-atom value modified to take the absence of internal conversion into account. Potential applications of such methods are discussed.

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Section: Case Study: Lifetime Of 94m Ru 44+mentioning

confidence: 99%

Statistical approaches to lifetime measurements with restricted observation times

et al. 2017

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“…Table 1 gives their half-life T 1/2 taken from 335 ENSDF [34, 35,36,37], total decay energy Q β , and daughter neutron separation energy S n taken from [38] and the neutron emission probability P n taken from [39]. Table 1: Half-life T 1/2 , decay energy window Q β , daughter neutron separation energy S n , and neutron emission probability P n for each measured isotope.…”

Section: Measurements and Data Analysismentioning

confidence: 99%

“…This constitutes the third field of application of this detector. The BELEN detector is part also of the 35 largest neutron counter of this kind (more than 160 3 He tubes) that is being assembled by the BRIKEN collaboration [17] for the measurement of exotic nuclei at RIKEN.…”

mentioning

confidence: 99%

Characterization of a neutron–beta counting system with beta-delayed neutron emitters

Agramunt

Taín

Gómez-Hornillos

et al. 2016

Nuclear Instruments and Methods in Physics Research Section A:

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A new detection system for the measurement of beta-delayed neutron emission probabilities has been characterized using fission products with well known β-delayed neutron emission properties. The setup consists of BELEN-20, a 4π neutron counter with twenty 3 He proportional tubes arranged inside a large polyethylene neutron moderator, a thin Si detector for β counting and a selftriggering digital data acquisition system. The use of delayed-neutron precursors with different neutron emission windows allowed the study of the effect of energy dependency on neutron, β and β-neutron rates. The observed effect is well reproduced by Monte Carlo simulations. The impact of this dependency on the accuracy of neutron emission probabilities is discussed. A new accurate value of the neutron emission probability for the important delayed-neutron precursor 137 I was obtained, P n = 7.76(14)%.

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“…It maintains a rather high value at N = 58 before it significantly drops at the onset of collectivity at N = 60. For Sr [50][51][52][53][54]56], Kr [50][51][52][53]56,57], and Se [49,57,59] isotopes, no such peaking of the 2 + 1 energies is found, but rather a flat behavior up to N = 58. Nevertheless, a slight increase in the 2 + 1 energy at N = 56 is observed for 92 Kr and 88 Ge (this work).…”

mentioning

confidence: 99%

Triaxiality of neutron-rich Ge84,86,88 from low-energy nuclear spectra

Lettmann¹,

Werner²,

Pietralla³

et al. 2017

Phys. Rev. C

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γ -ray transitions between low-spin states of the neutron-rich 84,86,88 Ge were measured by means of in-flight γ -ray spectroscopy at 270 MeV/u. Excited 6 + 1 , 4 + 1,2 , and 2 + 1,2 states of 84,86 Ge and 4 + 1 and 2 + 1,2 states of 88 Ge were observed. Furthermore, a candidate for a 3 + 1 state of 86 Ge was identified. This state plays a key role in the discussion of ground-state triaxiality of 86 Ge, along with other features of its low-energy level scheme. A new region of triaxially deformed nuclei is proposed in the Ge isotopic chain.

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Nuclear Data Sheets for A = 94

Cited by 135 publications

References 205 publications

Statistical approaches to lifetime measurements with restricted observation times

Statistical approaches to lifetime measurements with restricted observation times

Characterization of a neutron–beta counting system with beta-delayed neutron emitters

Triaxiality of neutron-rich Ge84,86,88 from low-energy nuclear spectra

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