Effect of the Surface Morphology on the Energy Transfer in Ion-Surface Collisions

Journal Article · Wed Aug 01 04:00:00 EDT 2007 · International Journal of Mass Spectrometry, 265(1):124-129

DOI:https://doi.org/10.1016/j.ijms.2007.01.018· OSTI ID:910523

Yang, Zhibo; Hadjar, Omar; Laskin, Julia

Time- and energy-resolved surface-induced dissociation (SID) of singly protonated des-Arg1-bradykinin (PPGFSPFR) combined with RRKM modeling was used to explore the effect of surface morphology on the energy transfer in collisions of large ions with surfaces. Experiments were performed in a Fourier Transform ion cyclotron resonance mass spectrometer (FT-ICR MS) specially configured for SID studies. Massselected and vibrationally relaxed ions were collided with three diamond surfaces of varying degree of roughness. The results demonstrate that internal energy distributions resulting from collisions of large ions with surfaces are rather independent of the surface morphology: the translational to vibrational (T→V) energy transfer efficiency is 19.5±0.5% for all three diamond surfaces. However, the scattered ion signal increases with decrease in the degree of roughness of the SID target suggesting that smooth diamond surfaces are better targets for analytical applications.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 910523
• Report Number(s): PNNL-SA-52720; 6291; KC0302020
• Journal Information: International Journal of Mass Spectrometry, 265(1):124-129, Journal Name: International Journal of Mass Spectrometry, 265(1):124-129 Journal Issue: 1 Vol. 265; ISSN 0168-1176; ISSN IJMPDN
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DIAMONDS
ENERGY SPECTRA
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
Environmental Molecular Sciences Laboratory
ION CYCLOTRON-RESONANCE
MASS SPECTROMETERS
MORPHOLOGY
ROUGHNESS
SURFACE PROPERTIES