Nuclear spectroscopy of90Y

Decman, D.J.; Sheline, Raymond K.; Tanaka, Y.; Jurney, E.T.

doi:10.1007/bf01412164

Cited by 11 publications

(1 citation statement)

References 21 publications

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“…91 Zr(t, α) 90 Y pickup-reaction analysis and the assumption of a similarity between the picked-proton SFs and picked-neutron SFs [71] have been involved for calculation of 93 Nb(n, α) 90 Y reaction cross-sections. Thus, 14 levels up to ∼ 2.5 MeV excitation energy have been considered within the analysis of the measured α-particle angular distributions [68] shown in Fig. 7.…”

Section: B Direct Reaction Accountmentioning

confidence: 99%

Optical potential for incident and emitted low-energy $α$ particles. III. Non-statistical processes induced by neutrons on Zr, Nb, and Mo nuclei

Avrigeanu¹,

Avrigeanu²

2023

Preprint

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Background: The reliability of a previous α-particle optical-model potential (OMP) on nuclei with mass number 45≤A≤209 was proved for emitted α particles as well, for proton-induced reactions on Zn isotopes [Phys. Rev. C 91, 064611 (2015), Paper I]. However, the same was not the case of neutrons on Zr stable isotopes [Phys. Rev. C 96, 044610 (2017), Paper II].Purpose: A recent assessment of this potential also for nucleon-induced α-emission on A∼60 nuclei, including pickup direct reaction and eventual Giant Quadrupole Resonance (GQR) α-emission, is completed for neutrons incident on Zr, Nb, and Mo stable isotopes. Methods: Consistent sets of input parameters, determined through analysis of independent data, is involved while no further empirical rescaling factors of the γ and nucleon widths have been involved.Results: A suitable account of all competitive reaction channels is confirmed by careful uncertainty analysis, to avoid parameter ambiguities and/or error compensation. Additional validation of this potential is also supported by recently measured (α, γ) and (α, n) cross-sections of Zr and Mo nuclei.Conclusions: An increase of the α-emission beyond the statistical predictions, through consideration of additional reaction channels of the pickup direct interaction and like-GQR decay, makes possible the description of both absorption and emission of α particles by the same optical potential.

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