Unimolecular Decomposition of Sputtered<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Al</mml:mi></mml:mrow><mml:mrow><mml:mi>n</mml:mi></mml:mrow><mml:mrow/><mml:mrow/><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Cu</mml:mi></mml:mrow><mml:mrow><mml:mi>n</mml:mi></mml:mrow><mml:mrow/><mml:mrow/><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>, and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Si</mml:mi></mml:mrow><mml:mrow><mml:mi>n</mml:mi></mml:mrow><mml:mrow/><mml:mrow/><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>Clusters
W. BegemannFakultät für Physik, Universität Bielefeld, 4800 Bielefeld 1, Federal Republic of GermanyK.‐H. Meiwes‐BroerFakultät für Physik, Universität Bielefeld, 4800 Bielefeld 1, Federal Republic of GermanyH. O. LutzFakultät für Physik, Universität Bielefeld, 4800 Bielefeld 1, Federal Republic of Germany
1986lv
ABI
Annotatsiya
The metastable decomposition of sputtered, mass-selected, cluster ions is investigated under ultrahigh-vacuum conditions. Highly excited $\mathrm{Al}_{n}^{}{}_{}{}^{+}$ and $\mathrm{Cu}_{n}^{}{}_{}{}^{+}$ cluster ions are found to decompose mainly by evaporation of single neutral atoms, whereas for $\mathrm{Si}_{n}^{}{}_{}{}^{+}$ clusters, fission is also observed. The decay rates of $\mathrm{Cu}_{n}^{}{}_{}{}^{+}$ clusters are in agreement with calculations presented by Klots. Some consequences of our results for the interpretation of cluster-ion mass spectra produced by other experimental methods are discussed.
Hali tarjima qilinmagan
Identifikatorlar
Iqtiboslar va manbalar
5 ta iqtibos0 ta foydalanilgan manba