Laser-stimulated electric quadrupole transitions in the molecular hydrogen ion H2+

Abstract

Molecular hydrogen ions are of metrological relevance due to the possibility of precise theoretical evaluation of their spectrum and of external-field-induced shifts. We report the results of the calculations of the rate of laser-induced electric quadrupole transitions between a large set of rovibrational states of H + 2 . The hyperfine and Zeeman structure of the E2 transition spectrum and the effects of the laser polarization are treated in detail. We also present the nuclear spin-electron spin coupling constants, computed with a precision 10 times higher than previously. * Electronic address: bakal10@abv.bg

Proton–electron mass ratio by high-resolution optical spectroscopy of ion ensembles in the resolved-carrier regime

“…The fundamental vibrational frequency is closely proportional to µ/m e , where µ = m p m d /(m p + m d ) is the reduced nuclear mass. We may therefore alternatively determine the ratio µ/m e , µ/m e = 1 223.899 228 668 (7) exp (20) theor,QED (37) theor,spin (3) CODATA2018 .…”

Quadropole transitions of the hydrogen molecular ion HD+

“…i j is the symmetric part of the tensor product of the electric field at the center of mass of the system [9].…”

“…Current and future results from precision spectroscopy of molecular hydrogen ions, combined with the theoretical prediction of transition frequencies, also allow determining the fundamental constants of atomic physics, such as the proton-to-electron mass ratio and/or Rydberg constant [5,6,7,8]. In homonuclear molecules H + 2 the electric quadrupole transitions has been explored recently [9,10]. So far only the dipole transition for HD + ion have been considered in the literature [11,12].…”

Phương Pháp Toán Tử Fk Cho Ion Phân Tử H2+ Phẳng Trong Điện Trường Đều

“…Phổ năng lượng và cấu trúc tinh tế, siêu tinh tế của MHI được tính toán từ những năm 30 đến nay (Bates, Ledsham, & Stewart, 2006; Vladimir I. . Đó cũng là cơ sở để xác định một số hằng số cơ bản, ví dụ như tỉ số khối lượng của các hạt proton và electron, hằng số Rydberg, bán kính proton Korobov, Danev, Bakalov, & Schiller, 2018).…”