scholarly journals Analytical Performance of a Microsecond-pulse Glow Discharge Time of Flight Mass Spectrometer.

1997 ◽  
Vol 13 (Supplement) ◽  
pp. 3-6 ◽  
Author(s):  
Pengyuan Yang ◽  
Yongxuan Su ◽  
Zhen Zhou ◽  
Xiaoru Wang ◽  
Fumin Li ◽  
...  
Keyword(s):  
Glow Discharge ◽  
Mass Spectrometer ◽  
Time Of Flight ◽  
Analytical Performance ◽  
Discharge Time ◽  
Flight Mass Spectrometer ◽  
Pulse Glow Discharge ◽  
Microsecond Pulse

Ion Transport Diagnostics in a Microsecond Pulsed Grimm-Type Glow Discharge Time-of-Flight Mass Spectrometer

2003 ◽  
Vol 75 (23) ◽  
pp. 6478-6484 ◽  
Author(s):  
Eric Oxley ◽  
Chenglong Yang ◽  
Jian Liu ◽  
W. W. Harrison
Keyword(s):  
Glow Discharge ◽  
Ion Transport ◽  
Mass Spectrometer ◽  
Time Of Flight ◽  
Discharge Time ◽  
Flight Mass Spectrometer

A radiofrequency glow-discharge-time-of-flight mass spectrometer for direct analysis of glasses

2004 ◽  
Vol 379 (4) ◽  
Author(s):  
Jorge Pisonero ◽  
Jos�Manuel Costa ◽  
Rosario Pereiro ◽  
Nerea Bordel ◽  
Alfredo Sanz-Medel
Keyword(s):  
Glow Discharge ◽  
Mass Spectrometer ◽  
Time Of Flight ◽  
Direct Analysis ◽  
Discharge Time ◽  
Flight Mass Spectrometer ◽  
Radiofrequency Glow Discharge

Characterization of a Radio-Frequency Glow Discharge/Time-of-Flight Mass Spectrometer

1994 ◽  
Vol 48 (11) ◽  
pp. 1337-1346 ◽  
Author(s):  
D. P. Myers ◽  
M. J. Heintz ◽  
P. P. Mahoney ◽  
G. Li ◽  
G. M. Hieftje
Keyword(s):  
Kinetic Energy ◽  
Glow Discharge ◽  
Radio Frequency ◽  
Mass Spectrometer ◽  
Time Of Flight ◽  
Detection Limits ◽  
Operating Conditions ◽  
Discharge Time ◽  
Radio Frequency Glow Discharge ◽  
Flight Mass Spectrometer

A radio-frequency glow discharge/time-of-flight mass spectrometer (RFGD-TOFMS) has been developed by simple modification of the interface to an ICP-TOFMS. The work described here evaluates the interface and operating conditions of the RFGD-TOFMS. The ion optics which focus ions toward the entrance of the TOFMS are the same as those used in the original ICP-TOFMS instrument. By means of pin-shaped brass samples of varied lengths, the sample-skimmer distance in the RFGD-TOFMS has been optimized at 4 mm. The discharge pressure and power have been found to be optimal at 50–60 W and 0.3 Torr, respectively. The application of small negative potentials to the skimmer cone (extraction orifice) was found to improve signals marginally. However, higher negative potentials reduced both signal levels and resolving power. The skimmer potential also affects the final kinetic energy of the ions before their extraction into the TOFMS. At 0.3 Torr all ions extracted for mass analysis have approximately the same kinetic energy, which can be estimated in the orthogonal TOFMS. Detection limits for several standard samples are at the single-ppm level, which is not unexpected; with the same ion-optical system, the current ICP-TOFMS also produces detection limits that are 2–3 orders of magnitude worse than those of many commercial instruments.

Microsecond pulsed glow discharge time-of-flight mass spectrometer

1994 ◽  
Vol 8 (8) ◽  
pp. 590-594 ◽  
Author(s):  
Wei Hang ◽  
Pengyuan Yang ◽  
Xiaoru Wang ◽  
Chenglong Yang ◽  
Yongxuan Su ◽  
...  
Keyword(s):  
Glow Discharge ◽  
Mass Spectrometer ◽  
Time Of Flight ◽  
Discharge Time ◽  
Pulsed Glow Discharge ◽  
Flight Mass Spectrometer

Development of a direct current gas sampling glow discharge ionization source for the time-of-flight mass spectrometer

1999 ◽  
Vol 14 (8) ◽  
pp. 1121-1127 ◽  
Author(s):  
John P. Guzowski, Jr. ◽  
Jose A. C. Broekaert ◽  
Steven J. Ray ◽  
Gary M. Hieftje
Keyword(s):  
Glow Discharge ◽  
Mass Spectrometer ◽  
Direct Current ◽  
Time Of Flight ◽  
Ionization Source ◽  
Gas Sampling ◽  
Flight Mass Spectrometer
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