| 1. |
- Cederström, Björn, 1973-, et al.
(författare)
-
Multi-prism x-ray lens
- 2002
-
Ingår i: Applied Physics Letters. - : American Institute of Physics (AIP). - 0003-6951 .- 1077-3118. ; 81:8, s. 1399-1401
-
Tidskriftsartikel (refereegranskat)abstract
- Refractive x-ray lenses with a triangular surface profile have been used to focus a synchrotron beam to sub-mum line width. These lenses are free from spherical aberration and work in analogy with one-dimensional focusing parabolic compound refractive lenses. However, the focal length can be easily varied by changing the gap between the two jaws. Silicon lenses were fabricated by wet anisotropic etching, and epoxy replicas were molded from the silicon masters. The lenses provided intensity gains up to a factor of 32 and the smallest focal line width was 0.87 mum. The simplified geometry and associated fabrication technique open possibilities for low-Z materials such as beryllium, which should greatly enhance the performance of refractive x-ray optics. (C) 2002 American Institute of Physics.
|
|
| 2. |
- Cederström, B, et al.
(författare)
-
Multi-prism x-ray lens
- 2002
-
Ingår i: Appl Phys Lett. ; 81:8, s. 1399-1401
-
Tidskriftsartikel (refereegranskat)
|
|
| 3. |
|
|
| 4. |
|
|
| 5. |
- Hassmén, Peter, et al.
(författare)
-
Intra-individual variability in state anxiety and self-confidence in elite golfers
- 2004
-
Ingår i: Journal of Sport Behavior. - : University of South Alabama. - 0162-7341. ; 27:3, s. 277-290
-
Tidskriftsartikel (refereegranskat)abstract
- Precompetition anxiety levels are assumed to moderate athletic performance. Unfortunately, cross-sectional and nomothetic research designs have often shown non-significant findings; intra-individual variability may be a contributing factor. The extent of variability in precompetition anxiety and self-confidence responses as related to golf performance and trait measures were therefore examined using an idiographic approach. Individual patterns of variability were found for Cognitive and Somatic Anxiety and Self-Confidence scores yielded prior to the games played. Variability in Somatic Anxiety was significantly related to variability in golf performance. Players low in anxiety variability scored significantly higher on Private Self-Consciousness. The findings suggest the influence of anxiety and self-confidence on performance may be better understood when trait characteristics of the individual are also considered.
|
|
| 6. |
|
|
| 7. |
- Lundqvist, Carolina
(författare)
-
Distractions in the attention of bowling players
- 2000
-
Ingår i: Proceedings from sport psychology conference in the new millennium. Halmstad University, Sweden: Centre for Sport Science.. ; , s. 269-273
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)
|
|
| 8. |
|
|
| 9. |
|
|
| 10. |
|
|
