Results 81 to 90 of about 64,474 (291)
Big-Bang Nucleosynthesis and Hadronic Decay of Long-Lived Massive Particles
, 2004 We study the big-bang nucleosynthesis (BBN) with the long-lived exotic particle, called X. If the lifetime of X is longer than \sim 0.1 sec, its decay may cause non-thermal nuclear reactions during or after the BBN, altering the predictions of the ...
B. D. Fields +27 more
core +3 more sources
Rapid Communications in Mass Spectrometry, EarlyView.ABSTRACT Rationale Poly (acrylates)s can be distinguished from one another by the nature of their side chains. From model poly (acrylates)s, the purpose of this work was to evaluate the contribution of alternative activation techniques to the collisional activation, based on ion–ion and ion–photon interactions.
Inès Aloui +5 more
wiley +1 more source
X-ray induced Coulomb explosion imaging of transient excited-state structural rearrangements in CS2
Communications Physics, 2023 Structural imaging of transient excited-state species is a key goal of molecular physics, promising to unveil rich information about the dynamics underpinning photochemical transformations.
James Unwin +36 more
doaj +1 more source
Deuteron Photodissociation in Ultraperipheral Relativistic Heavy-Ion on Deuteron Collisions
, 2003 In ultraperipheral relativistic deuteron on heavy-ion collisions, a photon emitted from the heavy nucleus may dissociate the deuterium ion. We find deuterium breakup cross sections of 1.38 barns for deuterium-gold collisions at a center of mass energy of
A. Trzcinska +22 more
core +5 more sources
Photodissociation chemistry footprints in the Starburst galaxy NGC 253 [PDF]
, 2009 We report the first detection of PDR molecular tracers, namely HOC+, and CO+, and confirm the detection of the also PDR tracer HCO towards the starburst galaxy NGC 253, claimed to be mainly dominated by shock heating and in an earlier stage of evolution ...
Apponi +26 more
core +1 more source
, 2011 Photodissociation is the dominant removal process of molecules in any region exposed to intense ultraviolet (UV) radiation. This includes diffuse and translucent interstellar clouds, dense photon-dominated regions, high velocity shocks, the surface layers of protoplanetary disks, and cometary and exoplanetary atmospheres.
van Dishoeck, Ewine F., Visser, Ruud
openaire +2 more sources
Spectroscopic analysis of bacterial photoreactivation
Photochemistry and Photobiology, Volume 101, Issue 2, Page 494-504, March/April 2025.This study investigates the effectiveness of fluorescence and Raman spectroscopy in detecting bacterial photoreactivation. Fluorescence spectroscopy shows limitations, because the intense fluorescence of tryptophan and tyrosine masks fluorescence emitted by thymine molecules.
Keyvan Khosh Abady +4 more
wiley +1 more source
The radiative association of PO/PH+ and the photodissociation of PH+
Frontiers in Astronomy and Space SciencesThe potential energy curves (PECs) and transition dipole moments (TDMs) of PH+ and PO are computed with the multireference configuration interaction method, and the cross-sections for the radiative association (RA) of PH+ and PO, which is the most ...
Yang Chen +7 more
doaj +1 more source
Optimization of photobiomodulation therapy for spinal cord injury: A review
Photochemistry and Photobiology, EarlyView.Photobiomodulation (PBM) therapy in the red and near‐infrared range can significantly modulate the secondary injury response and promote the reparative and regenerative potential of neural tissue after spinal cord injury (SCI). At present, due to the nature of delivery methods, the most effective dose and irradiance at the injury site to optimize ...
Isabella K. M. Drew +3 more
wiley +1 more source
High-precision spectroscopy of ultracold molecules in an optical lattice
New Journal of Physics, 2015 The study of ultracold molecules tightly trapped in an optical lattice can expand the frontier of precision measurement and spectroscopy, and provide a deeper insight into molecular and fundamental physics.
B H McGuyer +6 more
doaj +1 more source