I Isotope measurements in molecules

BillKet
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Hello! Is there any measurement (can be from different papers/experiments) of a diatomic molecular isotopic chain (i.e. at least 3 isotopes of a given nucleus) where the ground state is ##^{2}\Sigma##?
 
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I suppose you can find data on HeH+, HeD+ and HeT+.
There are accurate calculations:
https://aip.scitation.org/doi/10.1063/1.4759077
These molecules are of great interest, as they form in the decay of TH, TD and T_2 which are intensively studied in the context of measuring the mass of neutrinos.
 
DrDu said:
I suppose you can find data on HeH+, HeD+ and HeT+.
There are accurate calculations:
https://aip.scitation.org/doi/10.1063/1.4759077
These molecules are of great interest, as they form in the decay of TH, TD and T_2 which are intensively studied in the context of measuring the mass of neutrinos.
Thank you! But these seems to be calculated not measured? Also they don't list the molecular parameters associated to that energy level, which is what I actually need.
 
They would be singlets, wouldn't they? You want something like H2+.
 
mjc123 said:
They would be singlets, wouldn't they? You want something like H2+.
That's also true (honestly I would prefer something bigger than hydrogen, tho)
 
Hi. I have got question as in title. How can idea of instantaneous dipole moment for atoms like, for example hydrogen be consistent with idea of orbitals? At my level of knowledge London dispersion forces are derived taking into account Bohr model of atom. But we know today that this model is not correct. If it would be correct I understand that at each time electron is at some point at radius at some angle and there is dipole moment at this time from nucleus to electron at orbit. But how...

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