Nuclear Data Sheets for A = 93

Baglin, Coral M.

doi:10.1016/j.nds.2011.04.001

Cited by 80 publications

(38 citation statements)

References 303 publications

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“…The measurements were performed using mass-separated, fission-fragment beams of enhanced isobaric purity and a state-of-the-art detector setup with digital electronics. The revised beta half-life value of 152(8) ms for 93 Br differs from the accepted [18] value by more than 3σ. The isobaric selectivity of the experiment together with the trigger-less acquisition system allowed for detailed analysis of the data.…”

Section: Discussionmentioning

confidence: 59%

“…However, this line included a weak 768.4 keV line (I γ = 0.133%) from the decay of 93 Rb [17]. Since the decay of this isotope is well known [17,18], one can subtract this contribution by analyzing the relative intensity of other 93 Rb lines. The intensity of this contamination contributes 22.8 % of the total number of counts in the 769 keV line.…”

Section: Resultsmentioning

confidence: 99%

“…The adopted [18] value of 93 Kr half-life of T 1/2 = 1.286(10) s is a weighted average of three independent measurements [31][32][33]. Other values found in the literature are 1.17 (4) [19].…”

Section: Data Formentioning

confidence: 99%

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β-decay study of neutron-rich bromine and krypton isotopes

Miernik¹,

Rykaczewski²,

Grzywacz³

et al. 2013

Phys. Rev. C

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Section: Discussionmentioning

confidence: 59%

Section: Resultsmentioning

confidence: 99%

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β-decay study of neutron-rich bromine and krypton isotopes

Miernik¹,

Rykaczewski²,

Grzywacz³

et al. 2013

Phys. Rev. C

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“…Among the unstable isotopes, 93 Zr has the longest half-life of 1.6 Ma [1] and is a pure b-emitter. The interest in 93 Zr stems from the following two fields.…”

Section: Introductionmentioning

confidence: 99%

Zr/Nb isobar separation experiment for future 93Zr AMS measurement

Anderson

Bowers

et al. 2015

Nuclear Instruments and Methods in Physics Research Section B:

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Keywords:Accelerator mass spectrometry Bragg curve 93 Nb reduction chemistry a b s t r a c t 93 Zr (t 1/2 = 1.6 Ma) is mostly produced by the main s-process in low-to-intermediate mass AGB stars. Large uncertainty exists in the current 92 Zr(n,c) 93 Zr Maxwellian Average cross section. This could have significant impact on nucleosynthesis calculations. Large amounts of 93 Zr are also produced in nuclear reactors and pose long-term environmental radioactivity. Hence, measurement of 93 Zr by the AMS is important for both fields above. We report here on progress in the development of AMS method to measure 93 Zr. Compared with 98 MeV beam energy, Zr/Nb isobar position separation was improved using 155.2 MeV beam energy and Gas-Filled Magnet. Energy loss measurement with increased beam energy inside the detector indicates that higher beam energy can improve isobar energy loss separation. A chemical procedure to reduce the Nb content in Zr samples has been developed and tested. It reduces the 93 Nb content by a factor of 1000.

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“…Molybdenum-93 is an Electron Capture (EC) decay nuclide that emits low-energy (16.6 keV) X-rays [6]. Measurement of these Xrays helps in the quantification of 93 Mo.…”

Section: Introductionmentioning

confidence: 99%