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SAMOP 2021 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 5: Miscellaneous

MO 5.4: Vortrag

Donnerstag, 23. September 2021, 11:30–11:45, H2

Penning Electron Spectroscopy of Chiral Camphor Molecules Embedded in Helium Nanodroplets — •Subhendu De1, S. Mandal2, Sanket Sen3, L. Ben Ltaief1,4, Ram Gopal5, R. Richter6, M. Coreno7, S. Turchini7, D. Catone7, N. Zema7, M. Mudrich1,4, V. Sharma3, and S.R. Krishnan11QuCenDiEM group and Dept. of Physics, Indian Institute of Technology Madras, Chennai, India. — 2Indian Institute of Science Education and Research, Pune, India. — 3Indian Institute of Technology Hyderabad, Kandi, India. — 4Department of Physics and Astronomy, Aarhus University, Aarhus C. — 5Tata Institute of Fundamental Research, Hyderabad, Telangana, India. — 6Elettra-Sincrotrone Trieste, Basovizza, Italy — 7Istituto di Struttura della Materia - Consiglio Nazionale delle Ricerche (ISM-CNR), Trieste, Italy.

We performed Penning electron spectroscopy of chiral Camphor molecules embedded in cold sub-Kelvin He nanodroplets (∼ 0.4 K). We have employed a velocity map imaging (VMI) spectrometer to measure kinetic energy spectra and angular distributions of photoelectrons in coincidence with photoions detected by the time-of-flight (ToF) technique. When photoexcited at hν=21.43 eV , there is a significant transfer of excitation energy from the host atoms to the dopant molecules leading to the Penning ionization [1,2] of the dopant molecules. From, these spectra, we discern details of the excited states of fragment ions and photoelectron spectra associated with them.

[1] D. Buchta, et al. 2013 J. Phys. Chem. A, 117, 4394.

[2] L. Ben Ltaief et al. 2021 J Low Temp Phys, 202, 444-455.

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