Influence of canonical angular momentum spread on the synchrotron radiation spectrum for a relativistic plasma

1977 ◽  
Vol 20 (3) ◽  
pp. 436 ◽  
Author(s):  
G. D. Tsakiris ◽  
R. C. Davidson
Keyword(s):  
Angular Momentum ◽  
Synchrotron Radiation ◽  
Radiation Spectrum ◽  
Relativistic Plasma ◽  
Momentum Spread

scholarly journals Thermalization of synchrotron radiation from field-aligned currents

1988 ◽  
Vol 6 (3) ◽  
pp. 493-501 ◽  
Author(s):  
William Peter ◽  
Anthony L. Peratt
Keyword(s):  
Magnetic Field ◽  
Synchrotron Radiation ◽  
Energy Density ◽  
Radiation Spectrum ◽  
Axial Magnetic Field ◽  
Three Dimensional ◽  
Synchrotron Emission ◽  
Microwave Background ◽  
Strong Function ◽  
Current Filaments

Three-dimensional plasma simulations of interacting galactic-dimensioned current filaments show bursts of synchroton radiation of energy density 1·2 ×10−13 erg/cm3 which can be compared with the measured cosmic microwave background energy density of 1·5 × 10−13 erg/cm3. However, the synchrotron emission observed in the simulations is not blackbody. In this paper, we analyze the absorption of the synchrotron emission by the current filaments themselves (i.e., self-absorption) in order to investigate the thermalization of the emitted radiation. It is found that a large number of current filaments (>1031) are needed to make the radiation spectrum blackbody up to the observed measured frequency of 100 GHz. The radiation spectrum and the required number of current filaments is a strong function of the axial magnetic field in the filaments.

Electron energy distribution of a mirror confined relativistic plasma inferred from synchrotron radiation measurements

1978 ◽  
Vol 21 (11) ◽  
pp. 2050 ◽  
Author(s):  
G. D. Tsakiris ◽  
D. A. Boyd ◽  
D. A. Hammer ◽  
A. W. Trivelpiece ◽  
R. C. Davidson
Keyword(s):  
Synchrotron Radiation ◽  
Energy Distribution ◽  
Electron Energy ◽  
Relativistic Plasma ◽  
Electron Energy Distribution ◽  
Radiation Measurements

SYNCHROTRON-RADIATION-SUPPORTED HIGH-ASPECT-RATIO NANOFABRICATION

COSMOS ◽  
2007 ◽  
Vol 03 (01) ◽  
pp. 79-88
Author(s):  
A. CHEN ◽  
G. LIU ◽  
L. K. JIAN ◽  
HERBERT O. MOSER
Keyword(s):  
Synchrotron Radiation ◽  
Aspect Ratio ◽  
Light Source ◽  
Process Parameters ◽  
High Aspect Ratio ◽  
Radiation Spectrum ◽  
Nanometer Scale ◽  
X Ray ◽  
Preliminary Results ◽  
Synchrotron Light

X-ray lithography with synchrotron radiation is an important nanolithographic tool which has unique advantages in the production of high aspect ratio nanostructures. The optimum synchrotron radiation spectrum for nanometer scale X-ray lithography is normally in the range of 500 eV to 2 keV. In this paper, we present the main methods, equipment, process parameters and preliminary results of nanofabrication by proximity X-ray lithography within the nanomanufacturing program pursued by Singapore Synchrotron Light Source (SSLS). Nanostructures with feature sizes down to 200 nm and an aspect ratio up to 10 have been successfully achieved by this approach.

scholarly journals QUANTUM TUNNELING AND SPECTROSCOPY OF NONCOMMUTATIVE INSPIRED KERR BLACK HOLE

2012 ◽  
Vol 21 (02) ◽  
pp. 1250018 ◽  
Author(s):  
YAN-GANG MIAO ◽  
ZHAO XUE ◽  
SHAO-JUN ZHANG
Keyword(s):  
Black Hole ◽  
Angular Momentum ◽  
Quantum Correction ◽  
Radiation Spectrum ◽  
Kerr Black Hole ◽  
Wave Functions ◽  
Radiation Temperature ◽  
Jacobi Method ◽  
Entropy Spectrum ◽  
First Order

We discuss the thermodynamics of the noncommutative inspired Kerr black hole by means of a reformulated Hamilton–Jacobi method and a dimensional reduction technique. In order to investigate the effect of the angular momentum of the tunneling particle, we calculate the wave function to the first order of the WKB ansatz. Then, using a density matrix technique we derive the radiation spectrum from which the radiation temperature can be read out. Our results show that the radiation of this noncommutative inspired black hole corresponds to a modified temperature which involves the effect of noncommutativity. However, the angular momentum of the tunneling particle has no influence on the radiation temperature. Moreover, we analyze the entropy spectrum and verify that its quantization is modified neither by the noncommutativity of spacetime nor by the quantum correction of wave functions.

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