Ionization of Water Clusters is Mediated by Exciton Energy Transfer from Argon Clusters

Journal Article · Tue Jan 24 23:00:00 EST 2012 · J. Phys. Chem. Lett.

DOI:https://doi.org/10.1021/jz2016654· OSTI ID:1076797

Golan, Amir; Ahmed, Musahid

The exciton energy deposited in an argon cluster, (Arn ,< n=20>) using VUV radiation is transferred to softly ionize doped water clusters, ((H2O)n, n=1-9) leading to the formation of non-fragmented clusters. Following the initial excitation, electronic energy is channeled to ionize the doped water cluster while evaporating the Ar shell, allowing identification of fragmented and complete water cluster ions. Examination of the photoionization efficiency curve shows that cluster evaporation from excitons located above 12.6 eV are not enough to cool the energized water cluster ion, and leads to their dissociation to (H2O)n-2H+ (protonated) clusters.

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: Chemical Sciences Division
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 1076797
• Report Number(s): LBNL-5374E
• Journal Information: J. Phys. Chem. Lett., Journal Name: J. Phys. Chem. Lett. Journal Issue: 4 Vol. 3; ISSN 1948-7185
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
99 GENERAL AND MISCELLANEOUS
Excitons
Clusters
Energy transfer
Water
VUV
Ionization