Shielding of an external oscillating electric field inside atoms

被引：6

作者：

Flambaum, V. V. ^{[1
,2
]}

机构：

[1] Univ New South Wales, Sch Phys, Sydney, NSW 2052, Australia

[2] Johannes Gutenberg Univ Mainz, D-55099 Mainz, Germany

来源：

PHYSICAL REVIEW A | 2018年 / 98卷 / 04期

基金：

澳大利亚研究理事会;

关键词：

LASER-RADIATION; DIPOLE MOMENT; NEUTRON; NUCLEI; PARITY; MEASURABILITY; ENHANCEMENT; CAPTURE; OBSERVE;

D O I：

10.1103/PhysRevA.98.043408

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

According to the Schiff theorem, an external electric field vanishes at the atomic nucleus in a neutral atom, i.e., it is completely shielded by electrons. This makes a nuclear electric dipole moment (EDM) unobservable. In this paper an extension of the Schiff theorem to an oscillating electric field is considered. Such a field can reach the nucleus and interact with the nuclear EDM. An enhancement effect appears if the field is in resonance with an atomic or molecular transition. The shielding by electrons strongly affects low-energy nuclear electric dipole transition amplitudes in different nuclear reactions, including radiative transitions, radiative nucleon capture, photo- or electro-excitation of nuclei, and laser-induced or laser-enhanced nuclear reactions.

引用

页数：4

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