X-ray diffraction study of the Ge(111)5×5-Sn and Ge(111)7×7-Sn surfaces
نویسندگان
چکیده
منابع مشابه
X-ray Evolution of SN 1987A
The X-ray observations of SN 1987A over the previous 20 years have seen the emergence of soft X-rays from the interaction of the explosion shock wave with the ambient medium. This shock wave is now interacting strongly with the inner ring and might have passed already the highest density regions. The emission can be described by thermal models with temperatures of ∼0.28 keV and ∼2.8+0.7 −1.0 ke...
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We set sensitive upper limits to the X-ray emission of four Type Ia supernovae (SNe Ia) using the Chandra X-ray Observatory. SN 2002bo, a normal, although reddened, nearby SN Ia, was observed 9.3 days after explosion. For an absorbed, high temperature bremsstrahlung model the flux limits are 3.2 × 10 ergs cm s (0.5–2 keV band) and 4.1 × 10 ergs cm s (2–10 keV band). Using conservative model ass...
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X-ray observations of SN 1987A in the Magel-lanic Clouds have been performed throughout the ROSAT mission, using the PSPC and the HRI detectors. We present the X-ray light curve based on all observations in the years 1991–1995. For the first time a significant increase of the X-ray flux from SN 1987A can be seen, corresponding to X–ray luminosities (0.5-2 keV) of 0.8−2.2× 10 34 erg/s about 4 – ...
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The theory of non-linear diffusive shock acceleration (NLDSA) predicts the formation of a precursor upstream of the shock, where accelerated particles diffuse and induce magnetic field amplification (MFA) through streaming instability. The non-detection of this precursor in X-rays in Chandra observations of the north-eastern region of SN 1006 (G329.6+14.6) led the authors of some previous work ...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1988
ISSN: 0163-1829
DOI: 10.1103/physrevb.38.13210