TERAHERTZ MAGNETOSPECTROSCOPY OF HEAVILY-DOPED Si(P)

2009 ◽  
Vol 23 (12n13) ◽  
pp. 2856-2860
Author(s):  
R. A. LEWIS ◽  
R. E. M. VICKERS
Keyword(s):  
Magnetic Fields ◽  
Conduction Band ◽  
Zeeman Splitting ◽  
Landau Levels ◽  
Metastable States ◽  
Absorption Lines ◽  
Strong Magnetic Fields ◽  
Heavily Doped

We demonstrate that lightly-doped Si ( P ) displays extremely sharp absorption lines – the narrowest yet reported for any impurity in natural Si . The Zeeman splitting of many of these lines in magnetic fields <10 T has been studied previously by a number of groups. In this paper we focus on the behavior of metastable states associated with conduction-band Landau levels. The use of a rather heavily doped sample and strong magnetic fields, up to 18 T, assists in the observation of these.

OBSERVATION OF PHOTOLUMINESCENCE FROM MAGNETO-PLASMAS UNDER INTENSE FEMTOSECOND EXCITATION IN STRONG MAGNETIC FIELDS

2004 ◽  
Vol 18 (27n29) ◽  
pp. 3775-3780
Author(s):  
Y. D. JHO ◽  
X. WANG ◽  
G. D. SANDERS ◽  
D. H. REITZE ◽  
C. J. STANTON ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Quantum Wells ◽  
Landau Levels ◽  
Emission Lines ◽  
Multiple Quantum Wells ◽  
High Magnetic Fields ◽  
Multiple Quantum ◽  
Threshold Intensity ◽  
Strong Magnetic Fields ◽  
Narrow Emission

We report results on measurements of magneto-photoluminescence at 4.2 K in In x Ga 1-x As multiple quantum wells in high magnetic fields (25 Tesla) and laser intensities (25 GW/cm 2) using 150 fs pulses. Novel magneto-plasma phenomena are observed, including strikingly narrow emission lines of Landau levels above a threshold intensity and the suppression of exciton-mixing-induced anti-crossings.

scholarly journals Hot-star wind models with magnetically split line blanketing

2018 ◽  
Vol 620 ◽  
pp. A176 ◽  
Author(s):  
J. Krtička
Keyword(s):  
Magnetic Fields ◽  
Zeeman Effect ◽  
Zeeman Splitting ◽  
Magnetic Line ◽  
Hot Stars ◽  
Strong Magnetic Fields ◽  
Flux Variability ◽  
Line Splitting ◽  
Line Force ◽  
The Magnetic Field

Fraction of hot stars posses strong magnetic fields that channel their radiatively driven outflows. We study the influence of line splitting in the magnetic field (Zeeman effect) on the wind properties. We use our own global wind code with radiative transfer in the comoving frame to understand the influence of the Zeeman splitting on the line force. We show that the Zeeman splitting has a negligible influence on the line force for magnetic fields that are weaker than about 100 kG. This means that the wind mass-loss rates and terminal velocities are not affected by the magnetic line splitting for magnetic fields as are typically found on the surface of nondegenerate stars. Neither have we found any strong flux variability that would be due to the magnetically split line blanketing.

scholarly journals Quantum field theoretic treatment of pion production via proton synchrotron radiation in strong magnetic fields: Effects of Landau levels

2015 ◽  
Vol 91 (12) ◽  
Author(s):  
Tomoyuki Maruyama ◽  
Myung-Ki Cheoun ◽  
Toshitaka Kajino ◽  
Youngshin Kwon ◽  
Grant J. Mathews ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Magnetic Fields ◽  
Pion Production ◽  
Landau Levels ◽  
Proton Synchrotron ◽  
Quantum Field ◽  
Strong Magnetic Fields
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