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The temperature dependence of photoabsorption of V13 + (1999)

Walther, C. ; Dietrich, G. ; Dostal, W. ; [weitere]

Springer

The European physical journal 9 (1999), S. 455-459

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ISSN: 1434-6079

Schlagwort(e): PACS: 32.80 Cross section photon-atom interaction – 36.40.Qv Stability and fragmentation of clusters – 36.40.Wa Charged clusters

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract. Photoabsorption cross sections of trapped V13 + clusters were measured for energies between 1.4 eV and 6.1 eV by use of a two-photon fragmentation technique. Using two laser pulses separated by a 100-ns delay period the cross sections of hot clusters (up to 1800 K) could be compared to the values at room temperature. Whereas sodium clusters are known to exhibit pronounced temperature dependence below 300 K, no continuation of these effects to higher temperatures was found for V13 +.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/s100530050478

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Digitale Medien

Fragmentation of gold clusters stored in a penning trap (1994)

Becker, St. ; Dietrich, G. ; Hasse, H.-U. ; [weitere]

New York, NY : Wiley-Blackwell

Rapid Communications in Mass Spectrometry 8 (1994), S. 401-402

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ISSN: 0951-4198

Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Physik

Notizen: The collision-induced dissociation of positively charged gold clusters (2-23 atoms) stored in a Penning trap has been studied. After collisions with rare gases, excited clusters predominantly decay by emission of one or two atoms. The loss of two atoms occurs most probably through the emission of a dimer rather than by a sequential evaporation. The minimum kinetic energies of clusters required to induce dissociation exhibit a pronounced odd-even effect. Clusters with an even number of delocalized electrons are more stable than those with an odd number.

Zusätzliches Material: 2 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/rcm.1290080512

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