Nuclear Data Sheets for A=73

Singh, Balraj; Chen, J.

doi:10.1016/j.nds.2019.02.006

Cited by 14 publications

(6 citation statements)

References 232 publications

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“…The measured cross sections extracted from the LBNL and LANL irradiations are shown in Figure 7 to agree very well with these existing results. Note that the reported cross sections are cumulative and include the formation contribution from the short-lived parent isomer 73m Se (t 1/2 = 39.8 (13) min) in addition to the longer-lived (t 1/2 = 7.15 (8) h) ground state [81]. The results of the BNL irradiation help to extend the excitation function and characterize its tail behaviour up to 200 MeV.…”

Section: Resultsmentioning

confidence: 99%

Measurement and modeling of proton-induced reactions on arsenic from 35 to 200 MeV

et al. 2021

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72 As is a promising positron emitter for diagnostic imaging that can be employed locally using a 72 Se generator. However, current reaction pathways to 72 Se have insufficient nuclear data for efficient production using regional 100-200 MeV high-intensity proton accelerators. In order to address this deficiency, stacked-target irradiations were performed at LBNL, LANL, and BNL to measure the production of the 72 Se/ 72 As PET generator system via 75 As(p,x) between 35 and 200 MeV. This work provides the most well-characterized excitation function for 75 As(p,4n) 72 Se starting from threshold. Additional focus was given to report the first measurements of 75 As(p,x) 68 Ge and bolster an already robust production capability for the highly valuable 68 Ge/ 68 Ga PET generator. Thick target yield comparisons with prior established formation routes to both generators are made. In total, high-energy proton-induced cross sections are reported for 55 measured residual products from 75 As, nat Cu, and nat Ti targets, where the latter two materials were present as monitor foils. These results were compared with literature data as well as the default theoretical calculations of the nuclear model codes TALYS, CoH, EMPIRE, and ALICE. Reaction modeling at these energies is typically unsatisfactory due to few prior published data and many interacting physics models. Therefore, a detailed assessment of the TALYS code was performed with simultaneous parameter adjustments applied according to a standardized procedure. Particular attention was paid to the formulation of the two-component exciton model in the transition between the compound and preequilibrium regions, with a linked investigation of level density models for nuclei off of stability and their impact on modeling predictive power. This paper merges experimental work and evaluation techniques for high-energy charged-particle isotope production in an extension to an earlier study of this kind.

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Section: Resultsmentioning

confidence: 99%

Measurement and modeling of proton-induced reactions on arsenic from 35 to 200 MeV

et al. 2021

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“…The data are taken from Refs. [8][9][10]37,[41][42][43][44][45][46][47] and the present work. Lines are drawn to guide the eye.…”

Section: Collective Versus Single-particle Excitationsmentioning

confidence: 96%

“…Systematics of low-spin levels in bromine isotopes drawn relative to the 5/2 − 1 excitations. The data are taken from Refs [8][9][10]37,[41][42][43][44][45][46][47]. and the present work.…”

mentioning

confidence: 99%

Low-spin excitations in Br89 populated in β− decay of Se89
Rza̧ca‐Urban
¹
,
Sieja
²
,
Czerwiński
³

et al. 2022
Phys. Rev. C
1
0
0
0
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“…The timing information was used to Fig. 3 Energy levels of 73 Ge populated by 73 Ga beta decay [14]; see [4] for an update of some branching ratios, e.g. 5,9% to the 66.7 keV level.…”

Section: Monte Carlo Simulation Of 73 Ga Decaysmentioning

confidence: 99%

“…Also shown are the metastable levels of 73 Ge with energies of 66.7 keV and 13.3 keV and half lives of 0.499 s and 2.95 µs, respectively. Figure adapted from[4].…”

mentioning

confidence: 99%

Search for exotic physics in double-β decays with GERDA Phase II

Agostini

Alexander

Araujo

et al. 2022

J. Cosmol. Astropart. Phys.

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A search for Beyond the Standard Model double-β decay modes of 76Ge has been performed with data collected during the Phase II of the GERmanium Detector Array (Gerda) experiment, located at the Laboratori Nazionali del Gran Sasso of INFN (Italy). Improved limits on the decays involving Majorons have been obtained, compared to previous experiments with 76Ge, with half-life values on the order of 1023 yr. For the first time with 76Ge, limits on Lorentz invariance violation effects in double-β decay have been obtained. The isotropic coefficient åof (3), which embeds Lorentz violation in double-β decay, has been constrained at the order of 10-6 GeV. We also set the first experimental limits on the search for light exotic fermions in double-β decay, including sterile neutrinos.

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Nuclear Data Sheets for A=73

Cited by 14 publications

References 232 publications

Measurement and modeling of proton-induced reactions on arsenic from 35 to 200 MeV

Measurement and modeling of proton-induced reactions on arsenic from 35 to 200 MeV

Low-spin excitations in Br89 populated in β− decay of Se89
Rza̧ca‐Urban
¹
,
Sieja
²
,
Czerwiński
³

et al. 2022
Phys. Rev. C
1
0
0
0
View full text Add to dashboard Cite

Search for exotic physics in double-β decays with GERDA Phase II

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Nuclear Data Sheets for A=73

Cited by 14 publications

References 232 publications

Measurement and modeling of proton-induced reactions on arsenic from 35 to 200 MeV

Measurement and modeling of proton-induced reactions on arsenic from 35 to 200 MeV

Low-spin excitations in Br89 populated in β− decay of Se89Rza̧ca‐Urban1, Sieja2, Czerwiński3 et al. 2022Phys. Rev. C1000View full textAdd to dashboardCite

Search for exotic physics in double-β decays with GERDA Phase II

Contact Info

Product

Resources

About

Low-spin excitations in Br89 populated in β− decay of Se89
Rza̧ca‐Urban
¹
,
Sieja
²
,
Czerwiński
³

et al. 2022
Phys. Rev. C
1
0
0
0
View full text Add to dashboard Cite