Rajesh K. Kushawaha
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View article: Strong-field induced ionization and dissociation of <i>cis</i> - and <i>trans</i> -1,2-dichloroethylene: Cl <sup>+</sup> and HCl <sup>+</sup> fragments
Strong-field induced ionization and dissociation of <i>cis</i> - and <i>trans</i> -1,2-dichloroethylene: Cl <sup>+</sup> and HCl <sup>+</sup> fragments Open
The study reports on the strong-field induced ionization and dissociation dynamics of cis - and trans -1,2-C 2 H 2 Cl 2 employing femtosecond laser and ion momentum spectroscopy, focusing on Cl + and HCl + ejection via two-body dissociatio…
View article: Molecular growth of PANH via intermolecular Coulombic decay
Molecular growth of PANH via intermolecular Coulombic decay Open
Nitrogen-bearing polycyclic aromatic hydrocarbons (PANHs) are ubiquitous in space. They are considered precursors to advanced biomolecules identified in meteorites. However, their chemical evolution into biomolecules in photodestructive as…
View article: Low-lying Dipole Resonances in FeCN<sup>−</sup>: A Viable Formation Pathway for FeCN<sup>−</sup> in Space
Low-lying Dipole Resonances in FeCN<sup>−</sup>: A Viable Formation Pathway for FeCN<sup>−</sup> in Space Open
A low-lying resonance in FeCN − anion was identified through abrupt changes in the spectral dependence of the photoelectron angular distribution. Non-Franck–Condon transitions from the resonance to the neutral FeCN ( 4 Δ), and the correspo…
View article: Angle-dependent strong-field ionization and fragmentation of carbon dioxide measured using rotational wave packets
Angle-dependent strong-field ionization and fragmentation of carbon dioxide measured using rotational wave packets Open
In this work, we experimentally study the angle-dependent single ionization of carbon dioxide (CO2) by linearly and circularly polarized pulses. The angle dependence of the ionization probability by linearly polarized pulses extracted from…
View article: Detailed assignment of normal and resonant Auger spectra of Xe near the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>L</mml:mi></mml:math> edges
Detailed assignment of normal and resonant Auger spectra of Xe near the edges Open
We present a comprehensive experimental and theoretical investigation on the LMM, LMN, and LNN normal Auger spectra of xenon, which reveal excellent agreement with theory when core-hole lifetimes of the two-hole final states are taken into…
View article: Studying Molecular Structure and Dynamics via Coulomb Explosion Imaging with X-rays and Ultrafast Laser Pulses
Studying Molecular Structure and Dynamics via Coulomb Explosion Imaging with X-rays and Ultrafast Laser Pulses Open
Coincidence momentum imaging is a powerful method to study molecular structure and dynamics. Here, we used the Coulomb explosion imaging method together with synchrotron radiation and ultrafast laser pulses in order to distinguish between …
View article: Electronic-state–lifetime interference in the hard-x-ray regime: Argon as a showcase
Electronic-state–lifetime interference in the hard-x-ray regime: Argon as a showcase Open
Electronic-state–lifetime interference is a phenomenon specific for ionization of atoms and molecules in the hard-x-ray regime. Using resonant KL2,3L2,3 Auger decay in argon as a showcase, we present a model that allows extracting the inte…
View article: Electronic state-lifetime interference in resonant Auger spectra: a tool to disentangle overlapping core-excited states
Electronic state-lifetime interference in resonant Auger spectra: a tool to disentangle overlapping core-excited states Open
Thanks to a new fit approach, electronic state-lifetime interference terms are extracted and used to disentangle overlapping states.