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Conferences
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ICN-UNAM
1482bc95ee34f0461176da21871284c8
3
icrc2007@icrc2007.unam.mx
30th International Cosmic Ray Conference
The 30th International Cosmic Ray Conference will be held from July 3, 2007 to July 11, 2007 in Merida, Yucatan, Mexico.
True
Merida, Mexico
2007-07-03T08:00:00
2007-07-11T19:00:00
2005-09-26T05:04:53
2024-04-12T17:46:55
Mexico/General
Dr.
IGeof-UNAM
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56
false
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1
Poster
Cosmic Ray Acceleration by Stochastic Fields
Dr.
Departamento de Fisica Espacial, Instituto de Geofisica, Universidad Nacional Autonoma de Mexico
ae815ef43e63c295748edb23e18b8937
Dr.
Departamento de Fisica Espacial, Instituto de Geofisica, Universidad Nacional Autonoma de Mexico
ae815ef43e63c295748edb23e18b8937
Merida, Mexico
Regency (Hyatt)
In 1949 Fermi proposed the stochastic acceleration as a particle acceleration
mechanism. Fermi spoke of large clouds magnetized that were the responsible
for this acceleration. In this work I have focused in the stochastic acceleration
due to fluctuations of the magnetic field of small scale that show to be
extremely efficient accelerating. I show that with a force of 10e-16 N a proton
can be accelerated from 0 to 10e9 eV in only 70 days and from 0 to 10e12 eV in
90,000 years. The limit of this mechanism is smaller to 10e15 eV since more
energy than that requires of more time than the age of the universe. Since the
time in which this mechanism accelerates depends on the average force
exercised by the fluctuations then is possible that in very turbulent zones of the
universe, greater energies can be reached in smaller time. For example if the
average force is 10e-11 N energy of 10e19 eV is reached in 893 million years.
1
More information about the venue
http://www.icrc2007.unam.mx/
link
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