Mass spectrometric probes of metal cluster distributions and metastable ion decay [electronic resource].

Published:: Argonne, Ill. : Argonne National Laboratory, 1988.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: Pages: 2 : digital, PDF file
Additional Creators:: Argonne National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

The study of metal clusters has provided both an opportunity and a challenge to the application of mass spectrometry. These days the most often-used technique for cluster generation - laser vaporization - leads to extensive distributions of cluster sizes, from one to perhaps thousands of atoms, and most studies reported to date use excimer laser ionization and time-of-flight mass spectrometry for cluster detection. Our apparatus is a simple one-stage TOF design employing Wiley-McLauren spatial focusing and a one-meter drift tube. In a second apparatus employing a pulsed valve in the cluster source, we see asymmetric broadening of niobium cluster mass peaks under multiphoton ionization conditions, indicating metastable decay of parent cluster ions. Other studies of niobium clusters have shown no such asymmetric peaks. 2 figs.

Report Numbers:

E 1.99:conf-880771-1
conf-880771-1

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Note:

Published through SciTech Connect.
01/01/1988.
"conf-880771-1"
"DE88011952"
36. American Society Mass Spectrometry (ASMS) conference on mass spectrometry and allied topics, San Francisco, CA, USA, 5 Jul 1988.
Cole, S.K.; Parks, E.K.; Riley, S.J.; Liu, K.

Funding Information:

W-31109-ENG-38

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