1. |
|
|
2. |
- Szymanski, J. J., et al.
(författare)
-
A study of the decay mu –> e gamma by the MEGA experiment
- 1996
-
Ingår i: Proceedings, 9th Meeting, DPF'96, Minneapolis, USA, August 11-15, 1996. Vol. 1, 2.. ; , s. 1450-1452
-
Konferensbidrag (refereegranskat)
|
|
3. |
- Dunham, I, et al.
(författare)
-
The DNA sequence of human chromosome 22
- 1999
-
Ingår i: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 402:6761, s. 489-495
-
Tidskriftsartikel (refereegranskat)
|
|
4. |
|
|
5. |
- Germany, G A, et al.
(författare)
-
Remote determination of auroral energy characteristics during substorm activity
- 1997
-
Ingår i: Geophysical Research Letters. - 0094-8276 .- 1944-8007. ; 24, s. 995-998
-
Tidskriftsartikel (refereegranskat)abstract
- Ultraviolet auroral images from the Ultraviolet Imager (UVI) onboard the POLAR satellite can be used as quantitative remote diagnostics of the auroral regions, yielding estimates of incident energy characteristics, compositional changes, and other higher order data products. Here incident energy estimates derived from UVI are compared with in situ measurements of the same parameters from an overflight by the DMSP F12 satellite coincident with the UVI image times during substorm activity occurring on May 19, 1996. This event was simultaneously observed by WIND, GEOTAIL, INTERBALL, DMSP and NOAA spacecraft as well as by POLAR.
|
|
6. |
|
|
7. |
- Adeva, B, et al.
(författare)
-
Large enhancement of deuteron polarization with frequency modulated microwaves
- 1996
-
Ingår i: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT. - : ELSEVIER SCIENCE BV. - 0168-9002. ; 372:3, s. 339-343
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- We report a large enhancement of 1.7 in deuteron polarization up to values of 0.6 due to frequency modulation of the polarizing microwaves in a two liter polarized target using the method of dynamic nuclear polarization. This target was used during a deep
|
|
8. |
|
|
9. |
|
|
10. |
- Buyanova, Irina, 1960-, et al.
(författare)
-
Electronic structure of the 0.88-eV luminescence center in electron-irradiated gallium nitride
- 1999
-
Ingår i: Physical review. B, Condensed matter and materials physics. ; 60:3, s. 1746-1751
-
Tidskriftsartikel (refereegranskat)abstract
- Photoluminescence (PL) spectroscopy is employed to determine the nature of a near-infrared PL emission with a no-phonon line at ∼0.88 eV, commonly present in electron-irradiated GaN. This PL emission is suggested to originate from an internal transition between a moderately shallow excited state (with an ionization energy ∼21 meV) and the deep ground state (with an ionization energy ∼900 meV) of a deep defect. The existence of a higher-lying second excited state related to the 0.88-eV PL center is also shown from temperature-dependent studies. A different electronic character of the wave functions related to the first and second excited states has been revealed by PL polarization measurements. Since the PL emission has been observed with comparable intensity in all electron-irradiated GaN samples independent of doping on the starting material, it is proposed that either native defects, or common residual contaminants or their complexes are involved. The substitutional ON donor (or related complex) is considered as the most probable candidate, based on the observed striking similarity in the local vibrational properties between the 0.88-eV PL centers and the substitutional OP donor in GaP.
|
|