1. |
- Eversberg, T, et al.
(författare)
-
The William-Wehlau Spectropolarimeter: Observing hot stars in all four Stokes parameters
- 1998
-
Ingår i: PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC. - : ASTRONOMICAL SOC PACIFIC. - 0004-6280. ; 110:753, s. 1356-1369
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- We introduce a new polarimeter unit, which, mounted at the Cassegrain focus of any telescope and fiber-connected to a fixed CCD spectrograph, is able to measure all Stokes parameters I, Q, U, and V across spectral Lines of bright stellar targets and other
|
|
2. |
|
|
3. |
- KUIPER, P, et al.
(författare)
-
ISOTROPIC O-1S PREPEAK AS EVIDENCE FOR POLARONS IN LA2NIO4+DELTA
- 1995
-
Ingår i: PHYSICA B. - : ELSEVIER SCIENCE BV. - 0921-4526. ; 209:1-4, s. 271-272
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The oxygen 1s absorption spectrum of La2NiO4 is very anisotropic. The ligand field splitting of the Ni 3d(9) upper Hubbard band in x(2) - y(2) and 3z(2) - r(2) states is observed. Excess oxygen induces holes with primarily oxygen 2p character in this char
|
|
4. |
- Kuiper, P, et al.
(författare)
-
Polarization-dependent nickel 2p x-ray-absorption spectra of La2NiO4+delta
- 1998
-
Ingår i: PHYSICAL REVIEW B-CONDENSED MATTER. - : AMERICAN PHYSICAL SOC. - 0163-1829. ; 57:3, s. 1552-1557
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- We present polarization dependent x-ray-absorption spectra at nickel L edges of well-characterized La2NiO4+delta single crystals. In the stoichiometric compound the splitting between the x(2)-y(2) and the 3z(2)-r(2) orbitals is 0.7 eV, according to a fit
|
|