Abstract
The 7S1-9P1 energy separation of He4 has been measured by the method of laser magnetic resonance in electron-beam-excited He4. The measurements have also provided Zeeman tuning coefficients for terms up to fourth order in the field B. Motional-Stark-effect (MSE)-dominated line shapes are observed at most fields. These line shapes are analyzed, and their Doppler-free portions used to obtain a value for the energy separation with a precision exceeding 1 ppm (ΔEo=980.7979±0.0002 cm-1). Arguments are presented that show the importance of the MSE in magnetically confined hot plasmas and in certain collapsed stars possessing high magnetic fields.
| Original language | English |
|---|---|
| Pages (from-to) | 1103-1114 |
| Number of pages | 12 |
| Journal | Physical Review A |
| Volume | 18 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1978 |
| Externally published | Yes |
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