Sökning: "angular momentum"

Visar resultat 6 - 10 av 77 avhandlingar innehållade orden angular momentum.

  1. 6. Isomeric yield ratios in nuclear fission

    Författare :Zhihao Gao; Andreas Solders; Ali Al-Adili; Mattias Lantz; Stephan Pomp; Olivier Serot; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nuclear fission; isomeric yield ratio; angular momentum; independent fission yield; ion guide; Applied Nuclear Physics; Tillämpad kärnfysik;

    Sammanfattning : Isomeric yield ratios (IYR), referring to the relative yield of the high spin states of a nucleus to the total yield of all observed states, is an observable of nuclear fission that has the potential to improve our understanding of the fission dynamics. Apart from that, systematic observations of IYRs can also contribute to other areas, such as the validation of fission models, modelling of the r-process in stellar nucleosynthesis, studies of the antineutrino mixing angle, the safety of present-day nuclear reactors, and the design of advanced reactor systems. LÄS MER

  2. 7. Athletic Sprint Start Biomechanics : Investigations into the relationships between three dimensional starting technique, first step width and performance

    Författare :Paul Nicolas Sandamas; Anton Arndt; Elena M. Gutierrez-Farewik; Aki Salo; Gymnastik- och idrottshögskolan; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; sprint start; step width; biomechanics; performance; angular momentum; Medicin Teknik; Medicine Technology;

    Sammanfattning : The block and early acceleration phase plays a very important role in the overall outcome of athletic sprint events. During this part of the race it is commonly observed that sprinters use a lower-body technique that involves the swing leg crossing medially in front of the athlete followed by wide steps. LÄS MER

  3. 8. Majorana Representation in Quantum Optics : SU(2) Interferometry and Uncertainty Relations

    Författare :Saroosh Shabbir; Gunnar Björk; Maria Chekhova; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Majorana representation; Quantum optics; interferometry; SU 2 group; angular momentum; arbitrary optical gates; Fysik; Physics;

    Sammanfattning : The algebra of SU(2) is ubiquitous in physics, applicable both to the atomic spin states and the polarisation states of light. The method developed by Majorana and Schwinger to represent pure, symmetric spin-states of arbitrary value as a product of spin-1/2 states is a powerful tool that allows for a great conceptual and practical simplification. LÄS MER

  4. 9. Optical metasurfaces for momentum exchange between light and matter

    Författare :Mohammad Mahdi Shanei; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; optical forces and torques; phase-gradient metasurface; particle transport; optical momentum exchange; Flat optics; rotary meta-motor; meta-particle;

    Sammanfattning : Light carries energy and momentum that can be transferred to matter. Because of the conservation of total momentum, a change in light momentum due to interaction with an object must be compensated by an equal but opposite change in the momentum of that object. LÄS MER

  5. 10. Search for new Phenomena in Dijet Angular Distributions at √s = 8 and 13 TeV

    Författare :Lene Bryngemark; Partikel- och kärnfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ATLAS; LHC; quark compositeness; dark matter; pile-up; quantum black holes; Contact Interactions; 13 TeV; 8 TeV; beyond the Standard Model; angular distributions; dijets; Jets;

    Sammanfattning : A new energy regime has recently become accessible in collisions at the Large Hadron Collider at CERN. Abundant in hadron collisions, the two-jet final state explores the structure of the constituents of matter and the possible emergence of new forces of nature, in the largest momentum transfer collisions produced. LÄS MER