JMSSJ On-line

JMSSJ On-line, Vol. 48 (2000) No. 4, pp. 241-247

Development of a Compact Time-of-Flight Mass Spectrometer with a High Mass Resolution and a Wide Mass Range		>> Full Text PDF >> References
*Naoaki SAITO^a), Kazuyoshi KOYAMA^a), and Mitsumori TANIMOTO^a)** ^a) Electrotechnical Laboratory (1-1-4 Umezono, Tsukuba, 305-8568, Japan)*

A time-of-flight mass spectrometer with a reflector has been constructed in a compact device (<1.8 m long). Neutral clusters are photoionized and accelerated by dc electric potential up to 25 kV. Positive and negative ion clusters are accelerated by a fast rising (<80 ns) pulsed electric potential up to ±10 kV. The ion clusters are detected by a two-stage multi-channel-plate and the detection signals are recorded by a microcomputer with a multi-stop time-to-digital converter. Both a high mass resolution up to 5,000 and a wide mass range from 1 u to more than 200,000 u are attained.

Key words: Time-of-flight, Mass spectrometer, Reflector, High mass resolution, Wide mass range, Cluster, Ion