Precise measurement of theJ=2larr;1 fine structure interval in N(II) by farhyphen;infrared laser magnetic resonance

摘要

Farhyphen;infrared laser magnetic resonance spectroscopy has been used to measure theJ=2larr;1 fine structure intervals in the3Pground states of singly ionized14N and15N atoms. In14N(II) this separation is 2459.3703(14) GHz, and in15N(II) it is 2459.3816(19) GHz. The hyperfine constants andgJfactors have been evaluated for both isotopes. Zero field energies for the hyperfine components of theJ=2larr;1 transition in both isotopes are given in an effort to facilitate their observation in interstellar sources. A complete description of the hyperfine and Zeeman Hamiltonian matrix elements for atomic fine structure transitions is given in an LS coupled basis set.