Ontology highlight
ABSTRACT:
SUBMITTER: Wucher A
PROVIDER: S-EPMC4089192 | biostudies-literature | 2014 Feb
REPOSITORIES: biostudies-literature
Wucher Andreas A Tian Hua H Winograd Nicholas N
Rapid communications in mass spectrometry : RCM 20140201 4
<h4>Rationale</h4>Chemical modification of a rare gas cluster ion beam (GCIB) to increase the intensity of desorbed molecular ions in secondary ion mass spectrometry experiments relative to the pure Ar cluster.<h4>Methods</h4>Doping of the GCIB by mixing small concentration levels (1-3% relative partial pressure) of CH4 into the Ar gas driving the cluster ion source.<h4>Results</h4>Mass spectra measured on a trehalose film using the doped GCIB exhibit enhanced molecular ion signals. From depth p ...[more]