Details

Autor(en) / Beteiligte

• Walmsley, T.
• Unwin, J.
• Allum, F.
• Bari, S.
• Boll, R.
• Borne, K.
• Brouard, M.
• Bucksbaum, P.
• Ekanayake, N.
• Erk, B.
• Forbes, R.
• Howard, A. J.
• Eng-Johnsson, P.
• Lee, J. W. L.
• Liu, Z.
• Manschwetus, B.
• Mason, R.
• Passow, C.
• Peschel, J.
• Rivas, D.
• Rolles, D.
• Rörig, A.
• Rouzée, A.
• Vallance, C.
• Ziaee, F.
• Burt, M.

Titel

Characterizing the multi-dimensional reaction dynamics of dihalomethanes using XUV-induced Coulomb explosion imaging

Ist Teil von

• The Journal of chemical physics, 2023-10, Vol.159 (14)

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2023

Link zum Volltext

Quelle

AIP Journals Complete

Beschreibungen/Notizen

• Site-selective probing of iodine 4d orbitals at 13.1 nm was used to characterize the photolysis of CH2I2 and CH2BrI initiated at 202.5 nm. Time-dependent fragment ion momenta were recorded using Coulomb explosion imaging mass spectrometry and used to determine the structural dynamics of the dissociating molecules. Correlations between these fragment momenta, as well as the onset times of electron transfer reactions between them, indicate that each molecule can undergo neutral three-body photolysis. For CH2I2, the structural evolution of the neutral molecule was simultaneously characterized along the C–I and I–C–I coordinates, demonstrating the sensitivity of these measurements to nuclear motion along multiple degrees of freedom.