The P7 terms of two excited chromium configurations have been studied by the techniques of level-crossing and double-resonance spectroscopy. The lifetimes of the J levels of the two terms were found by observation of the Hanle effect to be (3.34±0.5) × 10-8 sec and (6.51±0.9) × 10-9 sec for (3d54p)P47 and (3d44s4p)P47, respectively. gJ values for the three J levels of the (3d54p)P7 term were also determined: g(J=4)=1.7512(3), g(J=3)=1.9178(2), and g(J=2)=2.3351(3). For the purpose of studying core polarization in chromium, measurements were made of the magnetic hyperfine constants in both configurations. For 3d54p, |a(J=4)|=11.6±0.15 Mc/sec, |a(J=3)|≤1.5±2.0 Mc/sec, |a(J=2)|=26.16±0.10 Mc/sec, and for 3d44s4p, |a(J=3)|=70.4±2.6 Mc/sec.
ASJC Scopus subject areas
- Physics and Astronomy(all)