Student: Samrat Saha
Školitel: Pamir Nag, Ph.D. (ÚFCh JH AV ČR)
Konzultant: Doc. RNDr. Štěpán Roučka, Ph.D.
Stav práce: volná
Anotace:
Low-energy electron-molecule collision studies are important from fundamental as well as applications point of view. The extremely reactive low-energy electrons can be produced as a secondary particle due interaction of any high energy radiations with the medium. The low-energy electrons play an important role in upper atmospheric and interstellar medium chemistry, radiation induced damage to biomolecules, living cells or DNA stand break, focused electron beam induced deposition (FEBID) processes and many other applications. It is also possible to use low-energy electrons to have controlled chemical reactions and selective bond cleavages. Low-energy electron-molecule collision experiments can help us to understand the molecular structures, bond breaking and forming mechanisms and efficiently model and understand the above-mentioned processes.
The primary goal of the potential PhD student will be to perform low-energy electron collision experiments with biologically as well as astro-physically important molecules. The potential candidate will mainly be using two experimental setups, an electron energy loss spectrometer (EELS), and a velocity map imaging (VMI) spectrometer. The candidate will also be responsible for day to operation of the experimental setups and to perform the data analysis. The project related to the EELS setup will be done in close collaboration with the research group of doc. Martin Čížek, Institute of Theoretical Physics, Charles University. Depending on the progress of the research project, the candidate might need to travel to other research facilities to perform complementary experiments like ion-molecule collision experiments or synchrotron radiation induces processes.
Literature:
1. Gaseous Molecular Ions: Eugen Illengerber and J. Momogny,
2. Recent Progress in Dissociative Electron Attachment: From Diatomics to Biomolecules, Adv. Atom. Mol. Opt. Phys. 66 (2017) 545-657,
3. Vibronic Coupling through the Continuum in the e+CO2, Phys. Rev. Lett. 129 (2022), 013401,
4. Dissociative electron attachment in NCCN: absolute cross sections and velocity map imaging, Phys. Rev. A, 99 (2019) 052705.
Journal papers upon recommendation of supervisor