Sökning: "COLLISIONS"

Visar resultat 11 - 15 av 378 avhandlingar innehållade ordet COLLISIONS.

1. 11. Resonant phenomena in atomic collisions : a study of analytic properties of a non-relativistic scattering formulation

   Författare :Magnus Rittby; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : .... LÄS MER

3. 12. Collision- and photon-induced dynamics of complex molecular ions in the gas phase

   Författare :Linda Giacomozzi; Henning Zettergren; Jason Greenwood; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PAHs; Porphyrins; Adenine; Flavins; Biomolecules; Collisions; Experiments; Reactions; Non-Statistical Fragmentation; Molecular Dynamics; Photon-Induced Fragmentation; Luminescence; Photoisomerization; Proton Transfer; fysik; Physics;

   Sammanfattning : In this thesis, I report experiments probing collision- and photon-induced molecular dynamics in the gas phase. Excited molecules formed in such interactions may relax by emitting electrons or photons, isomerization or fragmentation. LÄS MER

4. 13. Net-Charge Fluctuations in Ultra-Relativistic Nucleus-Nucleus Collisions

   Författare :Henrik Tydesjö; Partikel- och kärnfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Quark-Gluon Plasma; Net-Charge Fluctuations; Pad Chamber; högenergi; Kosmisk strålning; High energy interactions; cosmic rays; PHENIX; Heavy-Ion Collisions; RHIC; Fysicumarkivet A:2004:Tydesjö;

   Sammanfattning : PHENIX is one of four experiments at the Relativistic Heavy-Ion Collider, RHIC. The high-energy heavy-ion collisions provided by this accelerator offer the possibility to study nuclear matter at high temperature and density. The high multiplicity of particles produced in these collisions puts high demands on detector performance. LÄS MER

5. 14. Statistical and Dynamical Aspects of Intermediate Energy Nuclear Collisions

   Författare :Roberta Ghetti; Fysiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; excitation function.; subthreshold pions; pion production; neutron cross-talk; correlation function; interferometry; intermittency; phase transition; thermal scaling; reducibility; multifragmentation; Heavy ion collisions; intermediate energy; Atomic and molecular physics; Atom- och molekylärfysik; Fysicumarkivet A:1997:Ghetti;

   Sammanfattning : Studies of intermediate energy heavy ion reactions have revealed the existence of a number of reducibility and thermal scaling properties in nuclear multifragmentation. In particular, the probability of emitting n-fragments is reducible to the probability of emitting a single fragment through the binomial distribution. LÄS MER

7. 15. From Strange to Charm : Meson production in electron-positron collisions

   Författare :Joachim Pettersson; Karin Schönning; Andrzej Kupsc; Simon Eidelman; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Hadron physics; Hadronic decays; Light mesons; Charmonium; Meson production; BESIII; Fysik med inriktning mot kärnfysik; Physics with specialization in Nuclear Physics;

   Sammanfattning : Decays of pseudoscalar mesons into a lepton-antilepton pair are very rare within the Standard Model since they cannot proceed via a single photon process. The C-even neutral mesons can be produced in electron-positron collisions by a two-photon intermediate state. LÄS MER