Role of boson-fermion statistics on the Raman spectra of Br2(X) in helium clusters -: art. no. 053401

The role played by the bosonic or fermionic character of He atoms surrounding a Br-2(X) molecule is analyzed through vibrotational Raman spectra simulations. Quantum chemistry-type calculations reveal the spin multiplicity to be chiefly responsible for the drastic difference observed by Grebenev et al. [Science 279, 2083 (1998)] in the rotational structure of molecules embedded in helium droplets.