Abstract

The spectrum of Nb XIII was observed with a low-inductance spark and a laser-produced plasma in the region from 70–630 Å on the 10.7-m grazing incidence spectrograph at NBS. From the identification of 38 lines, a system of 29 energy levels was determined. The level system (Cu I isoelectronic sequence, 3<i>d</i><sup>10</sup><i>nl</i>) includes the series <i>ns</i>(<i>n</i> = 4-6), <i>np</i>(<i>n</i> = 4-7), <i>nd</i>(<i>n</i> = 4-6), <i>nf</i>(<i>n</i> = 4-7), and <i>ng</i>(<i>n</i> = 5-8). The observed energy levels are compared with Hartree-Fock calculations. The ionization energy is determined from the <i>nf</i> and <i>ng</i> series to be 2 166 300 ± 300 cm<sup>-1</sup> (268.59 ± 0.04 eV).

PDF Article

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription