|
Eur. J. Mass Spectrom. 6, 523 - 530 (2000) |
|
A quadratic-field reflectron time-of-flight mass spectrometer incorporating intermediate temporal focusing | ||
Alex W. Colburn, A.E. Giannakopulos and Peter J. Derrick |
||
ABSTRACT: | ||
A time-of-flight mass spectrometer, using a two-electrode cone-plus-hyperboloid geometry to produce a quadratic reflecting field, has been designed, constructed and tested. The included angle of the cone was 90°. Matrix-assisted laser desorption/ionisation and direct laser desorption/ionisation were the methods used to produce ions. Physical constraints imposed by the geometry of the ion mirror were overcome by the use of ion-bunching to form an intermediate temporal focus. Experimental and ion-optical simulation results are presented, showing the large energy-bandwidth of the quadratic-field reflectron and the effectiveness of ion-bunching as a method of producing a temporal focus at the entrance to the ion mirror. | ||
Keywords: quadratic-field, ion mirror, reflectron, time-of-flight, ion-bunching, Simion |
You can now buy this paper on-line in PDF format; it costs only £11.75. Just click on the BUY on-line button. You can pay on-line through a secure server and get access immediately.
© IM Publications
Any problems? E-mail .