Zobrazeno 1 - 10
of 166
pro vyhledávání: '"Karpeshin, F. F."'
Autor:
Karpeshin, F. F.
Publikováno v:
Zh. Exp. i Teor. Fiz. 165, 145 (2024)
The possibility of refining the energy of the 8.36-eV 229mTh nuclear isomer -- the most likely candidate for the role of a nuclear frequency standard -- by means of resonant optical pumping is discussed. Attention is focused on considering the broade
Externí odkaz:
http://arxiv.org/abs/2403.16924
Autor:
Karpeshin, F. F.
Publikováno v:
JETP Letters, vol. 118, issue 8 (2023)
It is proposed to use the photoelectric effect in the inner shells of the 229Th atoms to refine the energy of the 8.3-eV isomer. The calculation was performed using the Feinberg-Migdal shaking theory, which leads to the probability of isomer formatio
Externí odkaz:
http://arxiv.org/abs/2311.03180
Autor:
Karpeshin, F. F.
Experimental data on the muon-induced prompt fission are analyzed and compared to theory. Good agreement is observed for the 2p to 1s and 3d to 1s transitions. Anomalously big nonradiative width in the case of 3d to 1s transition is surprised. Ways o
Externí odkaz:
http://arxiv.org/abs/2310.19421
Publikováno v:
JETP Letters 118 (7), 470 - 477 (2023) [Pis'ma v ZhETF 118 (7), 483 - 490 (2023) ]
The problem of the transition of electron shells of atoms to excited states in the process of neutrinoless double-$\beta$ decay is investigated. This subject is crucial for modeling the energy spectrum of $\beta$-electrons, which is sensitive to the
Externí odkaz:
http://arxiv.org/abs/2309.02850
Autor:
Karpeshin, F. F., Vitushkin, L. F.
The most probable candidate for the role of a nuclear optical standard is the 8.338-eV isomer of the 229mTh isotope of the thorium nucleus. Ways of using the resonance properties of the electron shell as an optical resonator to create laser-nuclear t
Externí odkaz:
http://arxiv.org/abs/2307.08711
Publikováno v:
Pis'ma v ZhETF 117(12), 887-891 (2023)
The electron shell of the daughter atoms often appears excited in the double-$\beta$ decays, which causes a change in the energy taken away by $\beta$-electrons. The average value and variance of the excitation energy of the electron shell of the dau
Externí odkaz:
http://arxiv.org/abs/2306.07270
Traditionally double neutrinoless electronic capture is considered as a resonance process. We have fulfilled shake-off probability calculations, leading to ionization of the electron shell, in the case of 164Er. Allowance for the shake-off removes th
Externí odkaz:
http://arxiv.org/abs/2209.03641
Traditionally double neutrinoless electronic capture is considered as a resonance process. We have fulfilled shake-off probability calculations, leading to ionization of the electron shell, in the case of $^{164}$Er. Allowance for the shake-off remov
Externí odkaz:
http://arxiv.org/abs/2205.11557
Study of the role of the electron screening in the $\alpha$ decay is advanced, aimed at the experimental test in the storage rings. To this end, systematic calculation of the effect in heavy ions of the nuclei within the Ra to Po domain of the $\alph
Externí odkaz:
http://arxiv.org/abs/2107.08544
Autor:
Karpeshin, F. F.
A comparative analysis of experiments on studying the (n, f), on one hand, and (n, n), on the other hand, angular correlations in fission is carried out, based on the model proposed by muonic conversion in fragments of prompt fission of 238U with neg
Externí odkaz:
http://arxiv.org/abs/2106.10371