42 citations · 150 across the 26 of their papers we have counts for
26 papers
Measurement of the energy of the 8.3-eV isomer of 229mTh with photoelectric effect
F. F. Karpeshin
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-Mi…
Revision of Analytical Properties of Reaction Amplitude near Thresholds Using the Example of Muon-Induced Prompt Fission
F. F. Karpeshin
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 nonr…
Atomic electron shell excitations in double- decay
M. I. Krivoruchenko, K. S. Tyrin, F. F. Karpeshin
The problem of the transition of electron shells of atoms to excited states in the process of neutrinoless double- decay is investigated. This subject is crucial for modeling th…
On the problems of creating a nuclear-optical frequency standard based on 229Th
F. F. Karpeshin, L. F. Vitushkin
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 o…
Impact of electron shell excitations on the energy spectrum of -electrons in neutrinoless double- decay
M. I. Krivoruchenko, K. S. Tyrin, F. F. Karpeshin
The electron shell of the daughter atoms often appears excited in the double- decays, which causes a change in the energy taken away by -electrons. The average value and vari…
Shake-off in the 164Er neutrinoless double electronic capture and the dark matter puzzle
F. F. Karpeshin, M. B. Trzhaskovskaya
Traditionally double neutrinoless electronic capture is considered as a resonance process. We have fulfilled shake-off probability calculations, leading to ionization of the electr…