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- Edner, Hans, et al.
(författare)
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Lidar measurements of atmospheric mercury
- 1990
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Ingår i: Environment and Pollution Measurement Sensors and Systems. - : SPIE. ; 1269:1, s. 73-80
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Konferensbidrag (refereegranskat)
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- Lieder, E. O., et al.
(författare)
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DSAM Lifetime Studies for Gd-Nd nuclei with EUROBALL and AFRODITE
- 2008
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Ingår i: Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 2007. - : AIP. - 1551-7616 .- 0094-243X. - 9780735405325 ; 1012, s. 383-385
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Konferensbidrag (refereegranskat)abstract
- Lifetimes of high-spin states have been measured for 142Gd and 134Nd with EU-ROBALL IV and AFRODITE, respectively, using DSAM. From calculations in the cranked Nilsson-Strutinsky model it was concluded that at the high-spin states of the (+,0)1 band, 142Gd represents a triaxial nucleus rotating around the longest principal axis.
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- Ragnarsson, Ingemar, et al.
(författare)
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Building angular momentum beyond band termination in 157,158Er
- 2006
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Ingår i: ; , s. 66-75
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Our present understanding of the terminating bands in the I=40-50 spin range of 157,158Er is reviewed briefly. It is only recently that it has been possible to study states at higher spin in these nuclei, beyond band termination. Firstly, a large number of weak high-energy transitions feeding the terminating states were observed. Secondly, some collective structures that extended discrete spectroscopy in these nuclei beyond I= 60 hbar were identified.
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- Ulander, Lars, 1962, et al.
(författare)
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VHF/UHF bistatic and passive SAR ground imaging
- 2015
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Ingår i: IEEE National Radar Conference - Proceedings. - 1097-5659. - 9781479982325 ; 2015-June:June, s. 669-673
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Konferensbidrag (refereegranskat)abstract
- Bistatic and passive radar are emerging technologies for covert ground surveillance based on cooperative or non-cooperative transmitters, respectively. The latter uses transmitters of opportunity, e.g. terrestrial digital video broadcasting (DVB-T). In the paper, we show results from two unique experiments conducted using airborne systems operating in the VHF and UHF bands. The first experiment investigates UHF-band passive synthetic aperture radar (SAR) in receive-only mode. DVB-T signals transmitted from a 300-m tall mast are used and SAR images are formed at ranges up to 15 km. The second experiment investigates VHF-band bistatic SAR with a transmitting airborne radar and a receive-only system on a small helicopter. Results show significantly higher signal-to-clutter ratio for man-made objects in forested areas at bistatic elevation angles of 20°. © 2015 IEEE.
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