Zobrazeno 1 - 10
of 150
pro vyhledávání: '"I. Bergqvist"'
Publikováno v:
Radiation Effects. 96:117-120
Cross sections for the reactions 197Au(n,γ)198Au and 115In(n,γ) 116mIn have been measured between 2, 0 and 7, 7 MeV with the activation method, with special attention being paid to corrections for background neutrons.
Publikováno v:
Zeitschrift f�r Physik A Atoms and Nuclei. 317:149-154
Using the28Si(n, γ)29Si reaction, transitions to the ground state and first excited state in29Si have been studied in the neutron energy range 3–14 MeV with improved neutron energy resolution (of about 100 keV). The 90° cross sections show consid
Autor:
Clive Ellegaard, M. Bedjidian, D. Bachelier, J.-Y. Grossiord, R. Haroutunian, M. Boivin, Peter Ekström, P. Radvanyi, A. Guichard, J. L. Boyard, A. Brockstedt, J.R. Pizzi, C. D. Goodman, I. Bergqvist, Didier Contardo, J.C. Jourdain, Lars Carlén, J.S. Larsen, M. Roy-Stephan, T. Hennino, C. Gaarde
Publikováno v:
Physics Letters B. 168:331-335
Data for the Δ excitation by the (3He,t) reaction at 2.0 GeV on various nuclei are presented together with results on 12C at 1.5 and 2.3 GeV. The Δ peak position and width are found to be target mass independent. Comparison with the p(3He,t) Δ++ r
Autor:
J. L. Boyard, J.C. Jourdain, M. Chamcham, T. Hennino, M. Gusakow, C. Gaarde, M. Boivin, Clive Ellegaard, Bo Jakobsson, Peter Ekström, M. Roy-Stephan, J. Lyttkens, M. Bedjidian, J.-Y. Grossiord, C. D. Goodman, I. Bergqvist, Lars Carlén, D. Bachelier, J.R. Pizzi, P. Radvanyi, A. Guichard, R. Haroutunian, J.S. Larsen
Publikováno v:
Physical Review Letters. 50:1745-1748
Data are presented for the (/sup 3/He, t) reaction at energies of 600 MeV, 1.2 GeV, and 2 GeV on targets /sup nat/C, /sup 54/Fe, and /sup 89/Y. The low--excitation-energy regions of the spectra are dominated by isospin-spin excitations. Cross-section
Publikováno v:
Nuclear Physics A. 443:404-414
The cross sections for the reactions 197Au(n, γ)198Au and 115In(n, γ)116mIn have been measured with the activation method in the neutron energy region 2.0–7.7 MeV. The influence of background neutrons on the results was studied in considerable de
Autor:
F. Farzanpay, Michel Vetterli, J. Lisantti, K.H. Hicks, Z. Tang, M.J. Iqbal, F. E. Bertrand, I. Bergqvist, D.M. Drake, A. Brockstedt, Z. Xu, X.Y. Chen, D.J. Horen, D. K. McDaniels, L.W. Swenson
Publikováno v:
Physics Letters B. 205:436-440
Analyzing power and spectral data for the inclusive quasifree ( p ,p ′) reaction on 208Pb at 290 MeV are presented. Cross sections were measured over an angular range of 4°–26° and for excitation energies up to 160 MeV. The free surface respons
Autor:
D. K. McDaniels, Leif Nilsson, G. Grenier, S. Joly, A. Waheed, I. Bergqvist, A. Lindholm, F. Rigaud, Nils Olsson, D.M. Drake, R. Zorro
Publikováno v:
Nuclear Physics A. 382:71-78
The reaction 208 Pb ( n , γ 0 ) 209 Pb was studied from 0.8 to 7.7 MeV to investigate relative contributions of the compound-nucleus and direct and semidirect processes in this energy range. Compound-nucleus reactions dominate below about 5 MeV and
Autor:
J. L. Boyard, Clive Ellegaard, Didier Contardo, I. Bergqvist, T. Hennino, J. Tinsley, P. Radvanyi, A. Guichard, Peter Ekström, A. Brockstedt, M. Bedjidian, J.S. Larsen, J.-Y. Grossiord, C. Gaarde, C. D. Goodman, T. S. Jorgensen, D. Bachelier, M. Roy-Stephan, J. C. Jourdain
Publikováno v:
Physical Review Letters. 59:974-977
We have succeeded in measuring at 0\ifmmode^\circ\else\textdegree\fi{} and small angles the energy spectra for the (d,2p${[\mathrm{}}^{1}$${S}_{0}$]) reaction (with the two protons in the singlet S state) at 650 MeV and 2 GeV. It is demonstrated that
Autor:
D.M. Drake, Nils Olsson, R. Zorro, F. S. Dietrich, D.K. McDaniels, Stephen A. Wender, Leif Nilsson, A. Lindholm, I. Bergqvist
Publikováno v:
Nuclear Physics A. 456:426-436
The 12 C ( n , γ 0 ) 13 C excitation function at 90° has been measured in the neutron energy region of 7.0 MeV to 19.5 MeV. The results show a prominent giant resonance at 17.2 MeV and a broad “pygmy” resonance structure around 10 MeV. We obtai