Zero-Field Level Crossing in the Helium Atom
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Zero-field level-crossing techniques have been used to measure some upper-state lifetimes of the helium atom. The half-widths of curves obtained by plotting the polarization against the magnetic field strength for the n1D–21D transitions yielded lifetimes of 2.03 × 10−8 s for the 31D state, 3.36 × 10−8 s for the 41D state, and 7.44 × 10−8 s for the 51D state. Collision cross sections for these 1D levels were also determined.
1974 ◽
Vol 29
(9)
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pp. 1253-1257
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1976 ◽
Vol 32
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pp. 613-622
2003 ◽
Vol 13
(12)
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pp. 3783-3789
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2019 ◽
Vol 21
(25)
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pp. 13696-13705
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