A5031546136- Advanced Chemical Physics Studies
- Mass Spectrometry Techniques and Applications
- Laser-Matter Interactions and Applications
- Dark Matter and Cosmic Phenomena
- Analytical chemistry methods development
- Molecular Spectroscopy and Structure
- Atomic and Molecular Physics
- Atmospheric Ozone and Climate
- Particle Detector Development and Performance
- Biochemical effects in animals
- Particle physics theoretical and experimental studies
- Quantum, superfluid, helium dynamics
- Nuclear physics research studies
- Various Chemistry Research Topics
- Photoreceptor and optogenetics research
- Astrophysics and Cosmic Phenomena
- Scientific Research and Discoveries
- Neuropeptides and Animal Physiology
- Cold Atom Physics and Bose-Einstein Condensates
- Computational Physics and Python Applications
- Ion-surface interactions and analysis
- Quantum Dots Synthesis And Properties
- Advanced NMR Techniques and Applications
- Water Quality Monitoring and Analysis
- Astro and Planetary Science
University of Gothenburg
1995-2025
Lund University
2018
New York Medical College
2015
Abstract Single photon double ionization of carbon diselenide ( $${\hbox {CSe}}_{2}$$ ) has been investigated by means multi-particle coincidence techniques. The interpretation the experimental spectra is helped post-Hartree-Fock computations at Coupled Clusters and Multi-Reference Configuration-Interaction levels to determine energetics electronic state potentials $$\hbox {CSe}_2^{2+}$$ its fragments. lowest energy found be 24.68 ± 0.20 eV, reflecting { X} ^3\Sigma ^-_g$$ ground state, in...
Abstract Dysregulation of the central noradrenergic system is a core feature post‐traumatic stress disorder (PTSD). Here, we examined molecular changes in locus coeruleus ( LC ) triggered by single‐prolonged SPS PTSD model at time when behavioral symptoms are manifested, and effect early intervention with intranasal neuropeptide Y NPY ). Immediately following stressors, male SD rats were administered / or vehicle /V). Seven days later, TH protein, but not mRNA , was elevated only /V group....
Dwarf spheroidal galaxies are among the most promising targets for indirect dark matter (DM) searches in $\ensuremath{\gamma}$ rays. The $\ensuremath{\gamma}$-ray flux from DM annihilation a dwarf galaxy is proportional to $J$-factor of source. line-of-sight integral mass density squared times $⟨{\ensuremath{\sigma}}_{\mathrm{ann}}{v}_{\mathrm{rel}}⟩/({\ensuremath{\sigma}}_{\mathrm{ann}}{v}_{\mathrm{rel}}{)}_{0}$, where ${\ensuremath{\sigma}}_{\mathrm{ann}}{v}_{\mathrm{rel}}$ cross-section...
Molecular oxygen, O 2 , is vital to life on Earth and possibly also exoplanets. Although the biogenic processes leading its accumulation in Earth’s atmosphere are well understood, abiotic origin still not fully established. Here, we report combined experimental theoretical evidence for electronic state–selective production of from SO a chemical constituent many planetary atmospheres one that played an important part Great Oxidation Event. The involves dissociative double ionization efficient...
Double ionization spectra of isothiocyanic acid (HNCS) have been measured using multi-electron and multi-ion coincidence techniques combined with high-level theoretical calculations. The adiabatic double energy HNCS is found at 27.1 ± 0.1 eV associated the formation X 3A″ ground state HNCS2+. characteristics different dissociation channels are examined compared to results electronic structure calculations obtained by systematically elongating three bonds H-NCS, HN-CS, HNC-S. For instance,...
Double and triple ionization of allene are investigated using electron-electron, ion-ion, electron-electron-ion electron-electron-ion-ion (ee, ii, eei, eeii) coincidence spectroscopies at selected photon energies. The results provide supporting evidence for a previously proposed roaming mechanism in H3+ formation by double ionization. lowest vertical energy is found to be 27.9 eV, while adiabatic not accessed the neutral geometry. close 50 eV agreement with theoretical predictions. doubly...
The dissociation of OCS2+ ions formed by photoionization the neutral molecule at 40.81 eV is examined using threefold and fourfold electron-ion coincidence spectroscopy combined with high level quantum chemical calculations on isomeric structures their potential energy surfaces. dominant channel [OCS]2+ charge separation forming CO+ + S+ ion pairs, found here to be low intensity a lower-energy onset correspondingly smaller kinetic release than in more intense higher previously reported. We...
<title>Abstract</title> When a molecule loses two electrons, Coulomb repulsion makes the resulting doubly charged system likely to fragment into singly ions. These monocations can be detected in correlated fashion using multiplex time-of-flight spectroscopy. The island shapes ion-ion coincidence maps derived from such two-body dissociations contain detailed information on physical processes underlying fragmentation. Here, simple method is presented where fit function used determine...
Abstract When a molecule loses two electrons, Coulomb repulsion makes the resulting doubly charged system likely to fragment into singly ions. These monocations can be detected in correlated fashion using multiplex time-of-flight spectroscopy. The island shapes ion-ion coincidence maps derived from such two-body dissociations contain detailed information on physical processes underlying fragmentation. Here, simple method is presented where fit function used determine anisotropy parameter β...
Spectroscopic measurements were made of the population excited states in a low-voltage, low-temperature, open caesium plasma diode. Such device is under certain conditions seen to run special mode that essentially different from ordinary mode. This mode, which has been called Rydberg current exhibits many interesting features, such as very strong electron emission cold hot electrode. The objective present study was investigate and compare two modes. spectral line intensities excitation...
The dissociations of nascent Fe(CO)5++ ions created by 40.81 eV photoionization iron pentacarbonyl have been examined using threefold and fourfold electron-ion coincidence measurements. energies forms the explored high-level calculations, revealing several new structures. most stable form has a quite different geometry from that neutral molecule. dissociation pattern can be modeled as sequence CO evaporations followed two-body charge separations. Each Fe(CO)n++ (n = 1-4) dication is in...
Conventional electron spectroscopy is an established one-electron-at-the-time method for revealing the electronic structure and dynamics of either valence or inner shell ionized systems. By combining electron-electron coincidence technique with use soft X-radiation we have measured a double ionisation spectrum allene molecule in which one removed from C1s core orbital orbital, well beyond Siegbahns Electron-Spectroscopy-for-Chemical-Analysis method. This core-valence shows effect symmetry...
Using time-of-flight multiple electron and ion coincidence techniques in combination with a helium gas discharge lamp synchrotron radiation, the double ionisation spectrum of disulfur (S[Formula: see text]) subsequent fragmentation dynamics its dication are investigated. The S[Formula: text] sample was produced by heating mercury sulfide (HgS), whose vapour at suitably chosen temperature consists primarily two constituents: atomic Hg. A multi-particle-coincidence technique is thus...
Double and triple ionization of allene are investigated using electron-electron, ion-ion, electron-electron-ion electron-electron-ion-ion (ee, ii, eei, eeii) coincidence spectroscopies at selected photon energies. The results provide supporting evidence for a previously proposed roaming mechanism in H$_3^+$ formation by double ionisation. lowest vertical energy is found to be 28.5 eV, while adiabatic ionisation not accessed the neutral geometry. close 50 eV agreement with theoretical...