Results 71 to 80 of about 36,483 (226)

Fano interference and cross-section fluctuations in molecular photodissociation

, 2003
We derive an expression for the total photodissociation cross section of a molecule incorporating both indirect processes that proceed through excited resonances, and direct processes.
B. Mehlig, C. Mahaux, F. Haake, H. Feshbach, K. Kobayashi, O. Bohigas, S. A. Reid, T. Gorin, T. W. Canzler, W. Ihra, Y. Alhassid, Yan V. Fyodorov   +11 more
core   +1 more source

Direct and sequential radiative three-body reaction rates at low temperatures [PDF]

, 2011
We investigate the low-temperature reaction rates for radiative capture processes of three particles. We compare direct and sequential capture mechanisms and rates using realistic phenomenological parametrizations of the corresponding photodissociation ...
A. Aprahamian, A. Bartlett, A. Csótó, A. Dotter, A. S. Jensen, A.M. Mukhamedzhanov, B.S. Meyer, B.V. Danilin, C. Angulo, D. V. Fedorov, D.V. Fedorov, E. Garrido, E. Garrido, E. Garrido, E. Garrido, E. Garrido, E. Nielsen, F. Ajzenberg-Selove, H. Oberhummer, H.O.U. Fynbo, J. Giovinazzo, K. Ogata, L.V. Grigorenko, M.V. Zhukov, O. Burda, P. Descouvemont, R. Alvarez-Rodriguez, R. Alvarez-Rodriguez, R. de Diego, R. Diego de, R. Diego de, R. Diego de, R. Diego de, R. Álvarez-Rodríguez, R. Álvarez-Rodríguez, R. Álvarez-Rodríguez, R. Álvarez-Rodríguez, S. Aoyama, T. Myo, V.D. Efros, W.A. Fowler   +40 more
core   +3 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, Negar Karpourazar, Arjun Krishnamoorthi, Runze Li, Peter M. Rentzepis   +4 more
wiley   +1 more source

Experimental and Theoretical Investigation of the Crossover from the Ultracold to the Quasiclassical Regime of Photodissociation

, 2018
At ultralow energies, atoms and molecules undergo collisions and reactions that are best described in terms of quantum mechanical wave functions. In contrast, at higher energies these processes can be understood quasiclassically. Here, we investigate the
Kondov, S. S., Lee, C. -H., Majewska, I., McDonald, M., McGuyer, B. H., Moszynski, R., Zelevinsky, T.   +6 more
core   +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, Alan R. Harvey, Vincent P. Wallace, Stuart I. Hodgetts   +3 more
wiley   +1 more source

Photobiomodulation restores blood–brain barrier integrity after hypoxia via endothelial von Willebrand factor modulation in a humanised tricellular transwell model

The Journal of Physiology, EarlyView.
Abstract figure legend Photobiomodulation restores blood–brain barrier (BBB) integrity following hypoxic stress. A multicellular human BBB model comprising brain microvascular endothelial cells, astrocytes and pericytes was established in a transwell system and subjected to acute hypoxia.
Mirriam Domocos, Denis E. Bragin, Nagesh C. Shanbhag, Luise Schlotterose, Mootaz M. Salman   +4 more
wiley   +1 more source

Near-UV photolysis cross sections of CH_3OOH and HOCH_2OOH determined via action spectroscopy [PDF]

, 2006
Knowledge of molecular photolysis cross sections is important for determining atmospheric lifetimes and fates of many species. A method and laser apparatus for measurement of these cross sections in the near-ultraviolet (UV) region is described.
Fry, J. L., Marka, Z., Roehl, C. M., Wennberg, P. O.   +3 more
core   +1 more source

Molecular ion trap-depletion spectroscopy of BaCl$^+$

, 2011
We demonstrate a simple technique for molecular ion spectroscopy. BaCl$^+$ molecular ions are trapped in a linear Paul trap in the presence of a room-temperature He buffer gas and photodissociated by driving an electronic transition from the ground X$^1 ...
Chen, Kuang, Hudson, Eric R., Kotochigova, Svetlana, Petrov, Alexander, Rellergert, Wade G., Schowalter, Steven J., Sullivan, Scott T.   +6 more
core   +1 more source

Simulating cold atomic hydrogen production in linear radiofrequency ion traps

New Journal of Physics
We simulated the motion of ${\mathrm{BaH^{+}}}$ molecular ions which are sympathetically cooled by laser-cooled ${\mathrm{Ba^{+}}}$ ions in linear quadrupole and octupole radiofrequency (RF) ion traps.
Nikita Poljakov, Muhammed Sameed, Steven Armstrong Jones   +2 more
doaj   +1 more source

Ultrasonic–Laser Hybrid Treatment for Cleaning Gasoline Engine Exhaust: An Experimental Study

Vehicles
Vehicle exhaust gases remain one of the key sources of atmospheric air pollution and pose a serious threat to ecosystems and public health. This study presents an experimental investigation into reducing the toxicity of gasoline internal combustion ...
Bauyrzhan Sarsembekov, Madi Issabayev, Nursultan Zharkenov, Altynbek Kaukarov, Isatai Utebayev, Akhmet Murzagaliyev, Baurzhan Zhamanbayev   +6 more
doaj   +1 more source