SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "WFRF:(Jonson Björn) "

Sökning: WFRF:(Jonson Björn)

  • Resultat 31-40 av 299
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
31.
  • Anne, R., et al. (författare)
  • Projectile Coulomb-Excitation with Fast Radioactive Beams
  • 1995
  • Ingår i: Zeitschrift fur Physik A Hadrons and Nuclei. - 1431-5831 .- 0939-7922. ; 352:4, s. 397-401
  • Tidskriftsartikel (refereegranskat)abstract
    • We report a search for gamma rays emanating from Coulomb excitation of fast (30-46 MeV/u) radioactive projectiles He-8, Be-11,Be-12,Be-14 interacting with a lead target. These are clearly identified by their Doppler shift. The 320 keV 1/2(-) --> 1/2(+)gamma transition from Be-11 was observed with a cross-section of 191 +/- 26 mb which is noticeably less than expected from the known lifetime and in the perturbation limit of pure Coulomb excitation. In the other nuclei rather stringent upper limits of 0.01 to 0.2 Weisskopf units, are placed on the hypothetical transition to 1(-) states.
  •  
32.
  • Antonov, A. N., et al. (författare)
  • The electron-ion scattering experiment ELISe at the International Facility for Antiproton and Ion Research (FAIR)-A conceptual design study
  • 2011
  • Ingår i: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. - : Elsevier BV. - 0168-9002 .- 0167-5087. ; 637:1, s. 60-76
  • Tidskriftsartikel (refereegranskat)abstract
    • The electron-ion scattering experiment ELISe is part of the installations envisaged at the new experimental storage ring at the International Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany. It offers an unique opportunity to use electrons as probe in investigations of the structure of exotic nuclei. The conceptual design and the scientific challenges of ELISe are presented. (C) 2011 Elsevier B.V. All rights reserved.
  •  
33.
  • Arheden, Håkan, et al. (författare)
  • Allmän cirkulation
  • 2005
  • Ingår i: Klinisk fysiologi : med nuklearmedicin och klinisk neurofysiologi. - 9147052449 ; , s. 101-101
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)
  •  
34.
  • Atar, L., et al. (författare)
  • Quasifree (p, 2p) Reactions on Oxygen Isotopes: Observation of Isospin Independence of the Reduced Single-Particle Strength
  • 2018
  • Ingår i: Physical Review Letters. - 1079-7114 .- 0031-9007. ; 120:5
  • Tidskriftsartikel (refereegranskat)abstract
    • Quasifree one-proton knockout reactions have been employed in inverse kinematics for a systematic study of the structure of stable and exotic oxygen isotopes at the R3B/LAND setup with incident beam energies in the range of 300-450 MeV/u. The oxygen isotopic chain offers a large variation of separation energies that allows for a quantitative understanding of single-particle strength with changing isospin asymmetry. Quasifree knockout reactions provide a complementary approach to intermediate-energy one-nucleon removal reactions. Inclusive cross sections for quasifree knockout reactions of the type OA(p,2p)NA-1 have been determined and compared to calculations based on the eikonal reaction theory. The reduction factors for the single-particle strength with respect to the independent-particle model were obtained and compared to state-of-the-art ab initio predictions. The results do not show any significant dependence on proton-neutron asymmetry.
  •  
35.
  • Axelsson, H., et al. (författare)
  • Candidates for Electron-Neutrino Mass Measurements - the Case of Kr-81
  • 1988
  • Ingår i: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. - : Elsevier BV. - 0370-2693. ; 210:1-2, s. 249-252
  • Tidskriftsartikel (refereegranskat)abstract
    • The nuclear data of the known candidates for neutrino mass determination by resonant electron-capture beta decay are reviewed. New results are presented for the isotope 81Kr, where the transition to the 276 keV state has been found to have QEC=4.7±0.5 keV and a branching ratio of (3.0±0.2)×10−3
  •  
36.
  • Axelsson, L., et al. (författare)
  • Beta decay of Ar-31
  • 1998
  • Ingår i: Nuclear Physics A. - 0375-9474. ; 634:4, s. 475-496
  • Tidskriftsartikel (refereegranskat)abstract
    • A complete study of Ar-31 beta decay has been made by high-resolution charged-particle and gamma-ray spectroscopy. Beta-delayed radiation was detected by an array of three charged-particle detectors and a large-volume germanium detector. Fifteen new energy levels were discovered in Cl-31. The beta-strength distribution, measured to 14.5 MeV, is compared with a shell-model calculation in the full sd space. The quenching of the Gamow-Teller strength and the isospin impurity of the IAS in Cl-31 are discussed. (C) 1998 Published by Elsevier Science B.V.
  •  
37.
  • Axelsson, L., et al. (författare)
  • Deriving the angular variation of p(parallel to)-distributions for halo neutrons with robust statistics
  • 2001
  • Ingår i: Nuclear Physics A. - 0375-9474. ; 679:3-4, s. 215-230
  • Tidskriftsartikel (refereegranskat)abstract
    • The longitudinal neutron momentum distribution from core breakup of Li-11 and Be-11 have been measured at 29.9 MeV/u and 38.5 MeV/u, respectively. Separate measurements on Li-9 and Be-10 allowed extraction of the halo neutron distribution. The shapes of the distributions are analyzed using robust and descriptive statistics, For both isotopes the shape is changing with angle. (C) 2001 Elsevier Science B.V. All rights reserved.
  •  
38.
  • Axelsson, L., et al. (författare)
  • Study of the unbound nucleus 11N by elastic resonance scattering
  • 1996
  • Ingår i: Physical Review C (Nuclear Physics). - 0556-2813 .- 2469-9985 .- 2469-9993. ; 54:4, s. 1511-1514
  • Tidskriftsartikel (refereegranskat)abstract
    • Resonances in the unbound nucleus 11N have been studied, using the resonance scattering reaction 10C+p. The data give evidence for three states above the 10C+p threshold with energies 1.30, 2.04, and 3.72 MeV. These states can be interpreted, in a potential-model analysis, as the ground state and the first two excited states with spin-parity 1 / 2+, 1 / 2-, and 5 / 2+ arising from the shell-model orbitals 1s1 / 2, 0p1 / 2, and 0d5 / 2. A narrow state superposed on a broad structure found at higher energy could be interpreted as the mirror state of the 3 / 2- in 11Be shifted down in energy. This shift would suggest a large radius of the potential.
  •  
39.
  • Axelsson, L., et al. (författare)
  • Two-proton emission in the decay of Ar-31
  • 1998
  • Ingår i: Nuclear Physics A. - 0375-9474. ; 628:3, s. 345-362
  • Tidskriftsartikel (refereegranskat)abstract
    • Several beta-delayed two-proton branches were observed in the decay of Ar-31, the most intense ones proceeding through the isobaric analogue state (IAS) in Cl-31. The mechanism of the two-proton emission is studied via the energy and angular distributions of the two protons, Simultaneous emission of the two protons fits the present data well, sequential decays might also describe them. Independent of the decay mechanism, a spin of 5/2 for the IAS is suggested, An improved limit on the direct two-proton emission fi om the ground state of Ar-31 is presented, (C) 1998 Elsevier Science B.V.
  •  
40.
  • Backlund, Y., et al. (författare)
  • Micromachining of Silicon for Thermal and Position-Sensitive Nuclear-Detector Applications
  • 1989
  • Ingår i: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. - : Elsevier BV. - 0168-9002. ; 279:3, s. 555-559
  • Tidskriftsartikel (refereegranskat)abstract
    • As part of a programme aiming at the development of small nuclear radiation detectors, for example thermal detectors and position sensitive mosaic structures of surface barrier type, a technique for micromachining the detector bodies in silicon has been developed. The technique is based on an anisotropic etching property of a solution, mainly consisting of KOH. The etch rate is strongly orientation dependent with a speed in the 〈100〉 direction about 400 times faster than in the 〈111〉 direction. The major steps in the etching procedure are described and some examples of deep etching in Si are shown.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 31-40 av 299
Typ av publikation
tidskriftsartikel (238)
konferensbidrag (43)
rapport (5)
bokkapitel (4)
doktorsavhandling (3)
forskningsöversikt (3)
visa fler...
bok (2)
samlingsverk (redaktörskap) (1)
visa färre...
Typ av innehåll
refereegranskat (281)
övrigt vetenskapligt/konstnärligt (17)
populärvet., debatt m.m. (1)
Författare/redaktör
Jonson, Björn, 1941 (218)
Nilsson, Thomas, 196 ... (153)
Riisager, K. (138)
Borge, M. J. G. (129)
Nyman, Göran Hugo, 1 ... (116)
Tengblad, O (97)
visa fler...
Fynbo, H. O. U. (90)
Simon, H (87)
Fraile, L. M. (78)
Geissel, H. (77)
Aumann, T (73)
Jonson, Björn (70)
Cortina-Gil, D. (60)
Schrieder, G. (60)
Weick, H. (58)
Perea, A. (57)
Chulkov, L. V. (55)
Johansson, Håkan T, ... (52)
Richter, A. (51)
Boretzky, K. (48)
Zhukov, Mikhail, 194 ... (47)
Tengblad, Olof, 1957 (47)
Nociforo, C. (46)
Reifarth, R (45)
Emling, H. (44)
Rossi, D (40)
Langer, C. (39)
Paschalis, S. (39)
Wamers, F. (35)
Alvarez-Pol, H. (35)
Le Bleis, T. (35)
Heil, M (34)
Plag, R (34)
Kulessa, R. (34)
Kurz, N (33)
Chartier, M. (33)
Panin, V. (33)
Münzenberg, G. (33)
Krucken, R. (32)
Galaviz, D. (32)
Caesar, C (30)
Benlliure, J (29)
Mahata, K. (29)
Summerer, K. (29)
Scheidenberger, C. (29)
Chatillon, A. (28)
Kanungo, R. (28)
Ershova, O. (27)
Meister, Mikael, 196 ... (27)
Jeppesen, H. B. (27)
visa färre...
Lärosäte
Chalmers tekniska högskola (219)
Lunds universitet (104)
Uppsala universitet (17)
Göteborgs universitet (8)
Linköpings universitet (3)
Linnéuniversitetet (1)
Språk
Engelska (294)
Svenska (4)
Portugisiska (1)
Forskningsämne (UKÄ/SCB)
Naturvetenskap (222)
Medicin och hälsovetenskap (74)
Teknik (6)
Samhällsvetenskap (3)
Humaniora (2)

År

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy