1. Enhanced resonant x-ray emissions of mechanically milled hexagonal boron nitride in boron K-shell excitation
- Author
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Shiro Tadokoro, Shik Shin, Muneyuki Motoyama, Masaharu Oshima, Hirohiko Adachi, Hiroo Kato, Jun Kawai, Yasuji Muramatsu, Akane Agui, and Hidenori Kohzuki
- Subjects
Materials science ,Astrophysics::High Energy Astrophysical Phenomena ,Electron shell ,Dangling bond ,General Physics and Astronomy ,chemistry.chemical_element ,Molecular physics ,Nanoclusters ,Condensed Matter::Materials Science ,chemistry ,Non-bonding orbital ,Atomic electron transition ,Excited state ,Physics::Atomic and Molecular Clusters ,Emission spectrum ,Atomic physics ,Boron - Abstract
Enhanced resonant x-ray emissions were observed from mechanically milled hexagonal boron nitride nanoclusters in boron K-shell excitation using quasimonochromatic undulator radiation. The resonant x-ray emission intensity increases with decrease in size of the milled clusters. Comparison of the measured x-ray emission spectra with the calculated spectra using the discrete-variational Xa methods showed enhanced resonant x-ray emissions originate from the B1 s - n p B1 s 2 1 electron transition, with n p an unoccupied nonbonding orbital of twofold-coordination boron atoms with dangling bonds. X-ray emissions excited to n p orbitals may be possible for detecting dangling bonds in nanoclusters. [S0031-9007(96)00198-6]
- Published
- 1996