Californium-252 plasma desorption mass spectrometry in a low-voltage regime
Abstract
A 252-Cf plasma desorption mass spectrometer has been constructed which utilizes the reflectron principle of velocity focusing and operates in a low-voltage regime (i.e. below 1 kV). At these voltages, the lineshape of the 252-Cf plasma desorption spectrum is very sensitive to small changes in instrumental parameters, making it an ideal method of studying fundamental time-of-flight and desorption processes. Studies using this mass spectrometer have demonstrated that an electrostatic particle guide can be used to transmit ions having energies as low as 5 V. The velocity focusing capability of the Mamyrin reflectron in the 100 V energy range has been demonstrated. Studies of the secondary electron emission from microchannel plate surfaces by peptide molecular ions in the velocity threshold region have been performed. Results show that the secondary electron emission coefficient is linearly proportional to the incident ion mass and exponentially proportional to the incident ion velocity.
- Authors:
- Publication Date:
- Research Org.:
- Texas A and M Univ., College Station, TX (USA)
- OSTI Identifier:
- 6902802
- Resource Type:
- Miscellaneous
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CALIFORNIUM 252; DESORPTION; PLASMA; ELECTRON EMISSION; MASS SPECTROMETERS; PEPTIDES; ACTINIDE ISOTOPES; ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; CALIFORNIUM ISOTOPES; EMISSION; EVEN-EVEN NUCLEI; HEAVY NUCLEI; ISOTOPES; MEASURING INSTRUMENTS; NUCLEI; ORGANIC COMPOUNDS; PROTEINS; RADIOISOTOPES; SPECTROMETERS; YEARS LIVING RADIOISOTOPES; 400102* - Chemical & Spectral Procedures
Citation Formats
Geno, P W. Californium-252 plasma desorption mass spectrometry in a low-voltage regime. United States: N. p., 1988.
Web.
Geno, P W. Californium-252 plasma desorption mass spectrometry in a low-voltage regime. United States.
Geno, P W. 1988.
"Californium-252 plasma desorption mass spectrometry in a low-voltage regime". United States.
@article{osti_6902802,
title = {Californium-252 plasma desorption mass spectrometry in a low-voltage regime},
author = {Geno, P W},
abstractNote = {A 252-Cf plasma desorption mass spectrometer has been constructed which utilizes the reflectron principle of velocity focusing and operates in a low-voltage regime (i.e. below 1 kV). At these voltages, the lineshape of the 252-Cf plasma desorption spectrum is very sensitive to small changes in instrumental parameters, making it an ideal method of studying fundamental time-of-flight and desorption processes. Studies using this mass spectrometer have demonstrated that an electrostatic particle guide can be used to transmit ions having energies as low as 5 V. The velocity focusing capability of the Mamyrin reflectron in the 100 V energy range has been demonstrated. Studies of the secondary electron emission from microchannel plate surfaces by peptide molecular ions in the velocity threshold region have been performed. Results show that the secondary electron emission coefficient is linearly proportional to the incident ion mass and exponentially proportional to the incident ion velocity.},
doi = {},
url = {https://www.osti.gov/biblio/6902802},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1988},
month = {Fri Jan 01 00:00:00 EST 1988}
}