A forbidden singlet--triplet anticrossing in D$sub 2$

Journal Article · Sun Feb 15 04:00:00 EST 1976 · J. Chem. Phys., v. 64, no. 4, pp. 1842-1847

OSTI ID:4003874

Miller, T A; Freund, R S; Zegarski, B R

Anticrossings have been observed between the v=4, N=2, G (3d) $sup 1$$Sigma$/subg/ and v=0, N=2, r (4d)$sup 3$Pi/subg/ states of D$sub 2$. These anticrossings fall into two distinct sets, fairly weak and quite narrow (<15 G) anticrossings induced by spin--orbit coupling and stronger and broader (approx.100 G) anticrossings introduced by the Fermi contact hyperfine interaction. Analysis of the positions of the anticrossings has allowed an accurate determination of the levels' zero field separation, the g factors of both the singlet and the triplet, and the quadratic Zeeman parameters for both the singlet and triplet. Hyperfine structure is also observed in four of the anticrossings which provides a measure of the diagonal Fermi contact interaction in the $sup 3$Pi state. The widths of the anticrossing curves provide values for the spin--orbit and the Fermi contact perturbations between the two states. (AIP)

• Research Organization: Bell Laboratories, Murray Hill, New Jersey 07974
• NSA Number: NSA-33-027225
• OSTI ID: 4003874
• Journal Information: J. Chem. Phys., v. 64, no. 4, pp. 1842-1847, Journal Name: J. Chem. Phys., v. 64, no. 4, pp. 1842-1847; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

*DEUTERIUM-- FORBIDDEN TRANSITIONS
640302* --Physics Research--Atomic
Molecular &amp; Chemical Physics--Atomic &amp; Molecular Properties
EXCITED STATES
HYPERFINE STRUCTURE
L-S COUPLING
N60200* --Physics (Atomic &amp; Molecular)--Atomic &amp; Molecular Properties