Nuclear excitation by electron transition (NEET) in 237Np following K-shell photoionization

Saito, Tadashi; Shinohara, Atsushi; Otozai, Kiyoteru

doi:10.1016/0370-2693(80)90267-1

Cited by 40 publications

(16 citation statements)

References 9 publications

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“…measure the amounts of polysomes and total ribosomes at, and after, the onset of post-diapause development. This was made possible by applying a technique devised for obtaining undegraded polysomes from eggs with rigid shells [5]. The polysome content was found to increase parallel to the incorporation of a labeled amino acid into acid-insoluble fractions investigated with fragmented embryos cultured in vitro.…”

Section: Introductionmentioning

confidence: 99%

Changes in polysome content during development after diapause of Bombyx mori embryos

1982

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Undegraded polysomes could be extracted from eggs of Bombyx mori by cutting egg shells with a blade in a buffer containing high salt. The polysome content as measured by this method increased steeply during post‐diapause development, which was commenced by long term chilling followed by hot HCl treatment of diapausing eggs. At the 24th hr of the post‐diapause development the polysome content became 2.6‐times the level at 0 h. The alteration of the polysome content paralleled that of the incorporation of [14C]leucine into acid‐insoluble fractions investigated by modified Takami's embryonic culture system.

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Section: Introductionmentioning

confidence: 99%

Changes in polysome content during development after diapause of Bombyx mori embryos

1982

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“…(1), (4), and (5) into Eqs. (13) and (14) and using conservation of angular momentum, (14) can ljJ (15) Because the symbols of the interference terms between difFerent partial waves may be positive or negative, which cancel each other, we ignore these interference terms for summation over l. Now Eq. (15) …”

Section: Nkkc Cross Section Of Electric 2 -Pole Transitionmentioning

confidence: 99%

First-principles calculation of the cross sections for nuclear excitation by electron capture of channeled nuclei

Yuan

Kimball

1993

Phys. Rev. C

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The time-dependent fields experienced by a nucleus as it passes through a crystal can cause transitions to excited nuclear states. The transition rate is especially large when the speed of the nucleus satisfies a resonance condition. Previous estimates of the nuclear excitation rates have been based on symmetry arguments and experimental data for related processes. We present here a calculation of the nuclear excitation rate which does not rely on these simplifying approximations.Vsing nonrelativistic quantum mechanics, the excitation cross sections of highly stripped nuclei channeled along the Si (110) crystal axis have been calculated. The results are smaller than those given by previous estimates by several orders of magnitude. We note that there are similarly large discrepancies between different theoretical and experimental results for other phenomena involving coupled electronic and nuclear transitions. The reason for these disagreements is not clear. PACS number(s): 23.20.Lv, 23.20.Nx, 32.90.+a

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“…However, the probability for NEET must be extremely small in most nuclides because of a great difference in energy between those transitions. Among a few exceptional cases where the NEET conditions are satisfied, NEET was observed in 1890s [2] and 237Np [3].…”

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confidence: 94%

Observation of nuclear excitation by electron transition (NEET) in197Au

et al. 1984

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Nuclear excitation by electron transition (NEET) in 237Np following K-shell photoionization

Cited by 40 publications

References 9 publications

Changes in polysome content during development after diapause of Bombyx mori embryos

Changes in polysome content during development after diapause of Bombyx mori embryos

First-principles calculation of the cross sections for nuclear excitation by electron capture of channeled nuclei

Observation of nuclear excitation by electron transition (NEET) in197Au

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