Fragmentation of dimethyl ether in femtosecond intense field
Creators
- 1. Graduate School of the Chinese Academy of Sciences, Beijing 10039 (China)
- 2. State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, 457 Zhongshan Road, Liaoning, Dalian 116023 (China)
Description
The fragmentation of dimethyl ether (DME) in intense femtosecond laser field has been studied at 810, 405 and 270nm with intensities up to 2.48x1015, 3.86x1015 and 1.62x1014W/cm2, respectively. At 405nm, DME is possibly firstly ionized by multiphoton absorption, and then parent ion DME+ dissociates into fragments via filed-induced dissociation. For 810 and 270nm laser fields, DME firstly dissociates into CH3O and CH3 fragments and then these neutral fragments are ionized by field tunneling. Another possible way for DME to dissociate at 810 and 270nm is that DME is ionized by intense field ejection of inner valance electron and then the excited DME+ dissociates into fragment ions. Ultrafast rearrangement of DME or DME+ in intense field may be responsible to the unpredictable fragment ions, CHO+/C2H5+andH2+
Additional details
Identifiers
- DOI
- 10.1016/j.chemphys.2006.03.020;
- PII
- S0301-0104(06)00171-6;
Publishing Information
- Journal Title
- Chemical Physics
- Journal Volume
- 326
- Journal Issue
- 2-3
- Journal Page Range
- p. 571-576
- ISSN
- 0301-0104
- CODEN
- CMPHC2
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39096722
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS;
- Descriptors DEI
- ABSORPTION; DISSOCIATION; ELECTRONS; IONS; LASER RADIATION; METHYL ETHER; MULTI-PHOTON PROCESSES; TUNNEL EFFECT
- Descriptors DEC
- CHARGED PARTICLES; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; ETHERS; FERMIONS; LEPTONS; ORGANIC COMPOUNDS; ORGANIC OXYGEN COMPOUNDS; RADIATIONS; SORPTION
Optional Information
- Copyright
- Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.