Sökning: "reaction probability"

Visar resultat 6 - 10 av 63 avhandlingar innehållade orden reaction probability.

  1. 6. Reactivity of small transition-metal clusters with carbon monoxide

    Författare :Lotta Holmgren; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Con< sub>; reaction probability; Nin< sub; time-of-flight mass spectrometry; carbon monoxide; Wnn< sub; Nbn< sub; adsorption; laser vaporisation; supersonic beam; Cun< sub;

    Sammanfattning : .... LÄS MER

  3. 7. Multiscale Stochastic Simulation of Reaction-Transport Processes : Applications in Molecular Systems Biology

    Författare :Andreas Hellander; Per Lötstedt; Sverker Holmgren; Samuel Isaacson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; stochastic simulation; chemical master equation; reaction-diffusion master equation; unstructured mesh; active transport; hybrid methods; URDME; Scientific Computing; Beräkningsvetenskap;

    Sammanfattning : Quantitative descriptions of reaction kinetics formulated at the stochastic mesoscopic level are frequently used to study various aspects of regulation and control in models of cellular control systems. For this type of systems, numerical simulation offers a variety of challenges caused by the high dimensionality of the problem and the multiscale properties often displayed by the biochemical model. LÄS MER

  4. 8. Pair production, vacuum birefringence and radiation reaction in strong field QED

    Författare :Greger Torgrimsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; worldline instantons; lightfront quantisation; radiation reaction; vacuum birefringence; nonperturbative pair production;

    Sammanfattning : In this thesis we consider three QED phenomena in strong electromagnetic fields: Schwinger pair production, vacuum birefringence and radiation reaction. We study electron-positron pair production in a variety of field configurations and, using complex worldline instantons, reveal new insights into the case of fields with lightlike inhomogeneities. LÄS MER

  5. 9. Experimental Studies of the Synthesis and the Survival Probability of Transactinides

    Författare :Chariklia Rouki; Kjell Aleklett; Lars Westerberg; Matti Leino; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nuclear physics; transactinides; synthesis of superheavy elements; hot fusion; element 112; survival probability; Γn Γf; Kärnfysik; Nuclear physics; Kärnfysik; Nuclear Physics; kärnfysik;

    Sammanfattning : In 1999 scientists in Dubna announced the successful synthesis of the nucleus 283112 by the reaction 48Ca+ 238U, with a cross-section of 5.0 pb. The isotope was found to decay by spontaneous fission (t1/2=81 s). LÄS MER

  7. 10. Investigations of Reaction Cross Sections for Protons and 3He

    Författare :Mattias Lantz; Anders Ingemarsson; Livius Trache; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nuclear physics; reaction cross section; protons; 3He; experimental method; transmission method; optical model; parametrization; matter distributions; Kärnfysik; Nuclear physics; Kärnfysik;

    Sammanfattning : The reaction cross section gives the probability that a particle will undergo a nonelastic process when passing through a nuclear medium. Therefore reaction cross section data are of importance both for theoretical studies and for applications in such diverse fields as medicine, biology, astrophysics and accelerator-driven transmutation of nuclear waste. LÄS MER