Excited mercury atoms in an electrodeless discharge are exposed to high‐power radiation at 5289 Å obtained by frequency‐doubling the output of a Q‐switched Nd : glass laser. A very weak line is detected at 4250 Å and described to a Raman transition from the 63 P2 to the 63 P1 state.
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© 1970 American Institute of Physics.
1970
American Institute of Physics
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