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Nuclear excitation by electron capture (NEEC) is an important nuclear excitation mechanism which still lacks conclusive experimental verification. This is primarily attributed to strong background x-/$\gamma$-ray noise and competing nuclear…

We investigate the resonant process of nuclear excitation by electron capture, in which a continuum electron is captured into a bound state of an ion with the simultaneous excitation of the nucleus. In order to derive the cross section a…

Atomic Physics · Physics 2008-11-26 Adriana Pálffy , Zoltán Harman , Werner Scheid

A recent nuclear physics experiment [C. J. Chiara {\it et al.}, Nature (London) {\bf 554}, 216 (2018)] reports the first direct observation of nuclear excitation by electron capture (NEEC) in the depletion of the $^{93m}$Mo isomer. The…

Nuclear Theory · Physics 2019-06-03 Yuanbin Wu , Christoph H. Keitel , Adriana Pálffy

The recent paper by Chiara et al. provided the first experimental evidence of nuclear excitation by electron capture (NEEC), responding a long-standing theoretical prediction. NEEC was inferred to be the main channel to excite an isomer in…

Nuclear Experiment · Physics 2021-07-14 Song Guo , Yongde Fang , Xiaohong Zhou , C. M. Petrache

The process of nuclear excitation by electron capture in plasma environments generated by the interaction of ultra-strong optical lasers with solid-state samples is investigated theoretically. With the help of a plasma model we perform a…

Plasma Physics · Physics 2018-06-20 Jonas Gunst , Yuanbin Wu , Christoph H. Keitel , Adriana Pálffy

Efficient excitation of nuclei via exchange of a real or virtual photon has a fundamental importance for nuclear science and technology development. Here, we present a new mechanism of nuclear excitation based on the capture of a free muon…

Nuclear Theory · Physics 2022-10-12 Simone Gargiulo , Ming Feng Gu , Fabrizio Carbone , Ivan Madan

We investigate nuclear-resonant electron scattering as occurring in the two-step process of nuclear excitation by electron capture (NEEC) followed by internal conversion. The nuclear excitation and decay are treated by a phenomenological…

Atomic Physics · Physics 2008-04-08 Adriana Pálffy , Zoltán Harman

Nuclear excitation by electron capture (NEEC) in $^{229}$Th holds significant potential for precise nuclear state manipulation. In this study, we thoroughly investigate NEEC in $^{229}\text{Th}^{q+}$ ions by integrating quantum numbers ($n,…

Nuclear Theory · Physics 2025-10-10 Yang-Yang Xu , Qiong Xiao , Jun-Hao Cheng , Wen-Yu Zhang , Tong-Pu Yu

Nuclear excitation induced by lasers holds broad application prospects in precision metrology and nuclear energy, such as nuclear batteries and nuclear clocks. In the present work, the nuclear excitation via inelastic electron scattering…

Nuclear Theory · Physics 2025-08-27 Qiong Xiao , Yangyang Xu , Junhao Cheng , Liangqi Zhang , Wenyu Zhang , Yongsheng Huang , Tongpu Yu

X-ray assisted nuclear excitation by electron capture (NEEC) into inner-shell atomic holes in a plasma environment generated by strong optical lasers is investigated theoretically. The considered scenario involves the interaction of a…

Plasma Physics · Physics 2019-12-18 Yuanbin Wu , Christoph H. Keitel , Adriana Pálffy

The resonance strength of the two-step process of nuclear excitation by electron capture followed by $\gamma$ decay of the nucleus can be significantly increased in highly charged ions if the resonant capture proceeds via an excited…

The nuclear isomeric state $^{229m}$Th with an exceptionally low excitation energy makes the $^{229}$Th isotope a crucial candidate for nuclear clocks and many other applications. Efficient and controllable production of $^{229m}$Th is…

Nuclear Theory · Physics 2024-06-19 Jingyan Zhao , Adriana Pálffy , Christoph H. Keitel , Yuanbin Wu

We propose a model for description of the process of Nuclear Excitation by Electron Transition (NEET) near the $K$-shell ionization threshold of an atom. We explain the experimental results for the $^{197}$Au cross section excitation…

Nuclear Theory · Physics 2007-05-23 E. V. Tkalya

A nuclear excitation following the capture of an electron in an empty orbital has been recently observed for the first time. So far, the evaluation of the cross section of the process has been carried out widely using the assumption that…

Nuclear Theory · Physics 2022-06-22 Simone Gargiulo , Ivan Madan , Fabrizio Carbone

In dense astrophysical plasmas, neutron capture populates highly excited nuclear states close to the neutron threshold. The impact of additional low-energy nuclear excitations via coupling to the atomic shell on the ability of the so-formed…

Nuclear Theory · Physics 2014-07-28 Stephan Helmrich , Katja Spenneberg , Adriana Pálffy

Efficient production of nuclear isomers is critical for pioneering applications, like nuclear clocks, nuclear batteries, clean nuclear energy, and nuclear {\gamma}-ray lasers. However, due to small production cross sections and quick…

Long-lived excited states of atomic nuclei can act as energy traps. These states, known as nuclear isomers, can store a large amount of energy over long periods of time, with a very high energy-to-mass ratio. Under natural conditions, the…

Atomic Physics · Physics 2022-05-04 Yuanbin Wu , Simone Gargiulo , Fabrizio Carbone , Christoph H. Keitel , Adriana Pálffy

Isomer depletion via the process of nuclear excitation by inelastic electron scattering is investigated theoretically. A comprehensive study on low-energy nuclear excitations by inelastic electron scattering is performed to analyze the…

Nuclear Theory · Physics 2026-05-08 Ziwen Li , Jingyan Zhao , Xuyang Pu , Yuanbin Wu

The resonant process of nuclear excitation by electron transition (NEET) in highly charged ions is investigated. In NEET, a bound electronic decay transition occurs with the simultaneous excitation of the nucleus, provided that the energies…

Atomic Physics · Physics 2012-03-19 Srinivas K. Arigapudi , Adriana Pálffy

In the present work, we investigate the excitation rates and population dynamics of $^{229}$Th nuclei induced by inelastic electron scattering, focusing on how electron energy, flux, and ionic charge state influence the excitation process…

Nuclear Theory · Physics 2024-11-08 Yang-Yang Xu , Jun-Hao Cheng , You-Tian Zou , Qiong Xiao , Tong-Pu Yu
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