1,438 research outputs found
Magnets for cyclotrons
Different design aspects of cyclotrons and magnets for cyclotrons are reviewed. The cyclotron magnet design should be considered as an iterative process starting from a simple model that requires the vision of the complete cyclotron and the possibility of integration of all subsystems. Detailed calculations of 2-D and 3-D models follow to optimize the cyclotron magnet and cyclotron
Good Conduct Police Report Issued for Mrs. Zofia Drzewieniecka
Good conduct police report issued for Mrs. Zofia Drzewieniecka by 2nd Polish Corps Military Police signed by Captain S. Zaremba (in English). Ancona, Italy, August 15, 1946.https://digitalcommons.buffalostate.edu/ymcadocs/1007/thumbnail.jp
Beam splitting and Hong-Ou-Mandel interference for stored light
Storing and release of a quantum light pulse in a medium of atoms in the
tripod configuration are studied. Two complementary sets of control fields are
defined, which lead to independent and complete photon release at two stages.
The system constitutes a new kind of a flexible beam splitter in which the
input and output ports concern photons of the same direction but well separated
in time. A new version of Hong-Ou-Mandel interference is discussed.Comment: 8 pages, 3 figure
Electromagnetically-induced transparency and light storing of a pair of pulses
Electromagnetically-induced transparency and light storing are studied in the
case of a medium of atoms in a double Lambda configuration, both in terms of
dark- and bright-state polatitons and atomic susceptibility. It is proven that
the medium can be made transparent simultaneously for two pulses following
their self-adjusting so that a condition for an adiabatic evolution has become
fulfilled. Analytic formulas are given for the shapes and phases of the
transmitted/stored pulses. The level of transparency can be regulated by
adjusting the heights and phases of the control fields.Comment: text +6 figure
Finite temperature excitations of a trapped Bose gas
We present a detailed study of the temperature dependence of the condensate
and noncondensate density profiles of a Bose-condensed gas in a parabolic trap.
These quantitites are calculated self-consistently using the
Hartree-Fock-Bogoliubov equations within the Popov approximation. Below the
Bose-Einstein transition the excitation frequencies have a realtively weak
temperature dependence even though the condensate is strongly depleted. As the
condensate density goes to zero through the transition, the excitation
frequencies are strongly affected and approach the frequencies of a
noninteracting gas in the high temperature limit.Comment: 4 pages, Latex, 4 postscript figures. Submitted to Physical Review
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