6533b851fe1ef96bd12aa176

RESEARCH PRODUCT

Measurement of the electronicgfactor ofH2+

subject

description

Ion trapping and spin-dependent charge-exchange techniques were used to determine the electron g factor of ${\mathrm{H}}_{2}^{+}$ as a first step to provide a precise test of the theory of molecular g factors. Accessible to us were the vibrational states 4, 5, and 6. Averaged over these vibrational states we obtain g(v=4,5,6) =2.002 2837(18) 7(18) in agreement with the corresponding theoretical value of g=2.002 282 8(8). As a by-product we have measured the rotational g factor to be ${g}_{\mathrm{rot}=0.920(40)}$, compared with the calculated value of ${g}_{\mathrm{rot}=0.9244}$.