Premium
A Comparison of Desorption Yields from C + 60 to Atomic and Polyatomic Projectiles at keV Energies
Author(s) -
Schweikert E. A.,
van Stipdonk Michael J.,
Harris Ronny D.
Publication year - 1996
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/(sici)1097-0231(199612)10:15<1987::aid-rcm788>3.0.co;2-k
Subject(s) - polyatomic ion , chemistry , projectile , desorption , atomic physics , radiochemistry , nuclear physics , analytical chemistry (journal) , ion , environmental chemistry , physics , organic chemistry , adsorption , quantum mechanics
The desorption yields of negative ions from the impacts of keV energy C + 60 , (CsI) n Cs +n =0, 1 and Ga +primary projectiles are compared. The experiments were performed in the event‐by‐event bombardment and detection mode using primary ion energies that ranged from 12 to 32 keV. Samples studied were vapor‐deposited targets of CsI and phenylalanine. Compared at the the same energy, C + 60produces 5 to 80 times higher secondary ion yields than Cs +or Ga + , primary ions commonly used in secondary ion mass spectrometry.