Decay of mass-separated<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Xe</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>137</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>to levels in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>N</mml:mi><mml:mo>=</mml:mo><mml:mn>82</mml:mn><mml:mn /></mml:math>nucleus<mml:math xml

Western, W.R.; Hill, J. C.; Talbert, W.L.; Schick, W.C.

doi:10.1103/physrevc.15.1024

Cited by 7 publications

(6 citation statements)

References 11 publications

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“…If this level had been populated, it would likely decay to the 455-keV state, but a corresponding E γ ∼ 527-keV transition is absent. Secondly, the presence of additional transitions feeding the 455-keV state with respective energies of 1119, 1328 or 1461 keV [6,7] is not confirmed by the present data. Such a 1119-keV γ ray would form a triplet with the 1109and 1114-keV transitions, however, this peak does not have the unusually broad width that would suggest the presence of three close-lying transitions of comparable strength.…”

Section: Resultscontrasting

confidence: 91%

“…Firstly, the present data support the negative result of Ref. [7] on a low-lying candidate 3/2 + level at 982 keV that had been reported in a preceding study [6]. If this level had been populated, it would likely decay to the 455-keV state, but a corresponding E γ ∼ 527-keV transition is absent.…”

Section: Resultssupporting

confidence: 90%

“…This result was subsequently adopted in Refs. [6,7], but the compilation of Ref. [8] assigned spin-parity 9/2 − without providing a basis for the assignment.…”

Section: Resultsmentioning

confidence: 99%

“…Recent experimental studies of 137 Cs have been carried out with emphasis on the high-spin yrast structure, using deep-inelastic, one-proton transfer, and fusion-fission reactions [2,3] as well as spontaneous fission of 252 Cf [4]. The most comprehensive low-spin studies, on the other hand, date back to the nineteen-seventies using (d, 3 He) and ( 3 He,d) reactions [5] as well as β decay [6,7].…”

Section: Introductionmentioning

confidence: 99%

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Low-spin structure of the N=82 nucleus Cs137

et al. 2018

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Excited states in 137 Cs have been studied by using the near-barrier, single-proton transfer reaction 10 B(136 Xe, 9 Beγ) 137 Cs in inverse kinematics and performing particle-γ and particle-γγ coincidence measurements. The low-spin level scheme of 137 Cs has been augmented: (i) The expected set of single-proton, seniority υ = 1 states has been delineated in its entirety; (ii) Another member of the υ = 3 proton 0g 7/2 multiplet, a low-lying 9/2 + level, has been identified and this set of states now approaches completion; (iii) A second 9/2 + and a candidate 13/2 + level have been observed. The results are discussed in the framework of shell-model calculations in the proton 2s1d0g0h shell.

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Section: Resultscontrasting

confidence: 91%

Section: Resultssupporting

confidence: 90%

“…This result was subsequently adopted in Refs. [6,7], but the compilation of Ref. [8] assigned spin-parity 9/2 − without providing a basis for the assignment.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Low-spin structure of the N=82 nucleus Cs137

et al. 2018

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“…The 137 Xe β-decay has been studied and several excited states of 137 Cs between 3.5 and 4 MeV that decay directly to the ground state have been reported [8]. It is probable that these states will exhibit an NRF response as well.…”

Section: B Industrial Radiatormentioning

confidence: 99%

Nuclear resonance fluorescence for materials assay

Quiter

Ludewigt

Mozin

et al. 2009

2009 1st International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and Their Applications

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Abstract-This paper discusses the use of nuclear resonance fluorescence (NRF) techniques for the isotopic and quantitative assaying of radioactive material. Potential applications include age-dating of an unknown radioactive source, pre-and postdetonation nuclear forensics, and safeguards for nuclear fuel cycles Examples of age-dating a strong radioactive source and assaying a spent fuel pin are discussed. The modeling work has ben performed with the Monte Carlo radiation transport computer code MCNPX, and the capability to simulate NRF has bee added to the code. Discussed are the limitations in MCNPX's photon transport physics for accurately describing photon scattering processes that are important contributions to the background and impact the applicability of the NRF assay technique.

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