TY - JOUR
T1 - High-efficiency surface-induced dissociation on a rhenium oxide surface
AU - Dagan, Shai
AU - Amirav, Aviv
N1 - Funding Information:
This work was supportedb y a grant from the Wolfson Research Awards, administeredb y the Israel Academy of Sciences and HUmanit&
PY - 1993/11
Y1 - 1993/11
N2 - We report on the high-efficiency surface-induced dissociation of benzene and cyclohexane polyatomic ions after scattering from a rhenium oxide surface with a kinetic energy of 5-290 eV. Rhenium oxide was prepared by directly heating a rhenium metal foil, under 10-5 mbar partial oxygen pressure, at about 1000 K. Rhenium oxide is characterized by a very high work function of 6.4 eV and thus minimizes ion reneutralization probabilities. The catalytic combustion of surface organic impurities with oxygen ensures good long-term stability. We found that the surface-induced dissociation ion current is 70 times larger on rhenium oxide than on bare rhenium or stainless steel. Absolute scattered ion yields of about 50% were measured. The implications of surface-induced dissociation on mass spectrometry in supersonic molecular beams are mentioned.
AB - We report on the high-efficiency surface-induced dissociation of benzene and cyclohexane polyatomic ions after scattering from a rhenium oxide surface with a kinetic energy of 5-290 eV. Rhenium oxide was prepared by directly heating a rhenium metal foil, under 10-5 mbar partial oxygen pressure, at about 1000 K. Rhenium oxide is characterized by a very high work function of 6.4 eV and thus minimizes ion reneutralization probabilities. The catalytic combustion of surface organic impurities with oxygen ensures good long-term stability. We found that the surface-induced dissociation ion current is 70 times larger on rhenium oxide than on bare rhenium or stainless steel. Absolute scattered ion yields of about 50% were measured. The implications of surface-induced dissociation on mass spectrometry in supersonic molecular beams are mentioned.
UR - http://www.scopus.com/inward/record.url?scp=0042045431&partnerID=8YFLogxK
U2 - 10.1016/1044-0305(93)87004-V
DO - 10.1016/1044-0305(93)87004-V
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:0042045431
SN - 1044-0305
VL - 4
SP - 869
EP - 873
JO - Journal of the American Society for Mass Spectrometry
JF - Journal of the American Society for Mass Spectrometry
IS - 11
ER -