Symmetry Breakdown in Ground State Dissociation of HD+

Details Symmetry Breakdown in Ground State Dissociation of HD+ Symmetry Breakdown in Ground State Dissociation of HD+

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000phrvl..85...58b&link_type=abstract

Physical Review Letters, Volume 85, Issue 1, July 3, 2000, pp.58-61

Physics

17

Scientific paper

Experimental studies of the dissociation of the electronic ground state of HD+ following ionization of HD by fast proton impact indicate that the H++D1s dissociation channel is more likely than the H1s+D+ dissociation channel by about 7%. This isotopic symmetry breakdown is due to the finite nuclear mass correction to the Born-Oppenheimer approximation which makes the 1sσ state 3.7 meV lower than the 2pσ state at the dissociation limit. The measured fractions of the two dissociation channels are in agreement with coupled-channels calculations of 1sσ to 2pσ transitions.

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