Počet záznamů: 1
Surface Induced Dissociations of Protonated Ethanol Monomer, Dimer and Trimer Ions: Trimer Break-down Graph from the Collision Energy Dependence of Projectile Fragmentation
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SYSNO ASEP 0181642 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název Surface Induced Dissociations of Protonated Ethanol Monomer, Dimer and Trimer Ions: Trimer Break-down Graph from the Collision Energy Dependence of Projectile Fragmentation Tvůrce(i) Mair, C. (AT)
Lezius, M. (AT)
Herman, Zdeněk (UFCH-W) RID
Märk, T. D. (AT)Zdroj.dok. Journal of Chemical Physics. - : AIP Publishing - ISSN 0021-9606
Roč. 118, č. 15 (2003), s. 7090-7096Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova clusters ions ; molecule reaction ; polyatomic ions Vědní obor RIV CF - Fyzikální chemie a teoretická chemie CEP GA203/00/0632 GA ČR - Grantová agentura ČR CEZ AV0Z4040901 - UFCH-W Anotace Surface induced dissociation of the protonated ethanol molecular ion, protonated ethanol dimer, and protonated ethanol trimer on a stainless steel surface covered by hydrocarbons was investigated over the incident ion energy range 10-80 eV. Mass spectra of the product ions were recorded and from them the dependencies of the relative abundance of the product ions on the collision energy (CERMS, collision energy resolved mass spectra) were obtained. The dissociation kinetics follows the unimolecular decomposition model of a surface-excited polyatomic projectile behaving as a statistical ensemble. The CERMS curves of the three projectiles, normalized to the same number of internal degrees of freedom, fit each other over the respective energy regions, and matched together provide information on the break-down pattern of the surface-excited protonated ethanol trimer over a wide energy range. This clearly shows that surface collisions can be used to impart in a defined manner. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2004
Počet záznamů: 1