Sonia Erattupuzha
YOU?
Author Swipe
View article: Laser-induced valence electron excitation in acetylene
Laser-induced valence electron excitation in acetylene Open
Strong-field induced valence electron excitation is a common process in strong field interaction with atoms and molecules. In the case of polyatomic molecules, the effects of ionization from low-lying molecular orbitals and nuclear dynamic…
View article: Genetically diverse mouse platform to xenograft cancer cells
Genetically diverse mouse platform to xenograft cancer cells Open
The lack of genetically diverse preclinical animal models in basic biology and efficacy testing has been cited as a potential cause of failure in clinical trials. We developed and characterized five diverse RAG1 null mouse strains as model…
View article: Laser-subcycle control of electronic excitation across system boundaries
Laser-subcycle control of electronic excitation across system boundaries Open
We report on the results of a joint experimental and numerical study on the sub-cycle laser field-driven electron dynamics that underlie the population of highly excited electronic states in multiply ionized argon dimers by electron recapt…
View article: Laser-Induced Electron Transfer in the Dissociative Multiple Ionization of Argon Dimers
Laser-Induced Electron Transfer in the Dissociative Multiple Ionization of Argon Dimers Open
We report on an experimental and theoretical study of the ionization-fragmentation dynamics of argon dimers in intense few-cycle laser pulses with a tagged carrier-envelope phase. We find that a field-driven electron transfer process from …
View article: Frustrated double ionization of argon atoms in strong laser fields
Frustrated double ionization of argon atoms in strong laser fields Open
We demonstrate kinematically complete measurements on frustrated double ionization of argon atoms in strong laser fields with a reaction microscope. We found that the electron trapping probability after strong-field double ionization is mu…
View article: Frustrated double ionization of argon atoms in strong laser fields
Frustrated double ionization of argon atoms in strong laser fields Open
We report coincidence measurements of frustrated double ionization of argon atoms with a reaction microscope. Experimental results show electron trap- ping process during double ionization has a clear transition from the nonsequential to t…
View article: Laser-Induced Oxygen Formation from Carbon Dioxide
Laser-Induced Oxygen Formation from Carbon Dioxide Open
We report experiments on the direct observation of O2 formation from CO2 in strong laser fields. Our simulations and pump-probe measurements suggest that CO2 undergos bending motion during strong-field ionization which supports the O2 form…
View article: Enhanced ionization of acetylene in intense laser pulses is due to energy upshift and field coupling of multiple orbitals
Enhanced ionization of acetylene in intense laser pulses is due to energy upshift and field coupling of multiple orbitals Open
Synopsis We describe a new enhanced ionization mechanism for polyatomic molecules. It works via a significant energy up-shift of valence orbitals for stretched bonds and a strong concomitant increase in the coupling between multiple molecu…
View article: Enhanced ionisation of polyatomic molecules in intense laser pulses is due to energy upshift and field coupling of multiple orbitals
Enhanced ionisation of polyatomic molecules in intense laser pulses is due to energy upshift and field coupling of multiple orbitals Open
We present the results of a combined experimental and numerical study on strong-field ionisation of acetylene performed with the aim of identifying the mechanism behind the previously reported surprisingly large multi-electron ionisation p…
View article: Publisher's Note: Molecular oxygen observed by direct photoproduction from carbon dioxide [Phys. Rev. A <b>95</b>, 011404(R) (2017)]
Publisher's Note: Molecular oxygen observed by direct photoproduction from carbon dioxide [Phys. Rev. A <b>95</b>, 011404(R) (2017)] Open
Received 13 February 2017DOI:https://doi.org/10.1103/PhysRevA.95.029903©2017 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasAtomic & molecular processes in external fieldsMultiphoton or tunneling ionization & excita…
View article: Molecular oxygen observed by direct photoproduction from carbon dioxide
Molecular oxygen observed by direct photoproduction from carbon dioxide Open
Oxygen ($O_2$) is one of the most important elements required to sustain life. The concentration of $O_2$ on Earth has been accumulated over millions of years and has a direct connection with that of $CO_2$. Further, $CO_2$ plays an import…
View article: Structure and Electronic Transitions of C<sub>7</sub>H<sub>4</sub>O<sub>2</sub><sup>+</sup> and C<sub>7</sub>H<sub>5</sub>O<sub>2</sub><sup>+</sup> Ions: Neon Matrix and Theoretical Studies
Structure and Electronic Transitions of C<sub>7</sub>H<sub>4</sub>O<sub>2</sub><sup>+</sup> and C<sub>7</sub>H<sub>5</sub>O<sub>2</sub><sup>+</sup> Ions: Neon Matrix and Theoretical Studies Open
C7H4O2+ and C7H5O2+ ions and the respective neutrals have been investigated by absorption spectroscopy in neon matrixes following mass selection of ions produced from salicylic acid. Three electronic transitions starting at 649.6, 431.0, a…
View article: Coincidence spectroscopy of high-lying Rydberg states produced in strong laser fields
Coincidence spectroscopy of high-lying Rydberg states produced in strong laser fields Open
We report on the measurement of electron emission after the interaction of\nstrong laser pulses with atoms and molecules. These electrons originate from\nhigh-lying Rydberg states with quantum numbers up to $n \\lesssim 120$ formed by\nfru…
View article: Fragmentation of long-lived hydrocarbons after strong field ionization
Fragmentation of long-lived hydrocarbons after strong field ionization Open
We experimentally and theoretically investigated the deprotonation process on\nnanosecond to microsecond timescale in ethylene and acetylene molecules,\nfollowing their double ionization by a strong femtosecond laser field. In our\nexperim…
View article: Two-pulse control over double ionization pathways in CO2
Two-pulse control over double ionization pathways in CO2 Open
We visualize and control molecular dynamics taking place on intermediately populated states during different sequential double ionization pathways of CO2 using a sequence of two delayed laser pulses which exhibit different peak intensities…