Abstract

We performed experiments to study the low-energy part of the E1 response (Pygmy Dipole Resonance) in 90,94Zr nuclei, by measuring the (p,p’γ) and (α,α’γ) inelastic scattering reactions at energies Ebeam,p = 80 MeV and Ebeam,α = 130 MeV respectively. The inelastically scattered particles were measured by employing the high-resolution spectrometer Grand Raiden. The gamma-rays emitted following the de-excitation of the Zr target nuclei were detected using both the clover type HPGe detectors of the CAGRA array and the large volume LaBr3:Ce scintillation detectors from the HECTOR+ array. Some preliminary results are presented here.

Details

Title
Gamma decay of pygmy states in 90,94Zr from inelastic scattering of light ions
Author
Crespi, FCL 1 ; Bracco, A 1 ; Tamii, A 2 ; Blasi, N 3 ; Camera, F 1 ; Wieland, O 3 ; Aoi, N 2 ; Balabanski, D 4 ; Bassauer, S 5 ; Brown, A S 6 ; Carpenter, M P 7 ; Carroll, J J 8 ; Ciemala, M 9 ; Czeszumska, A 2 ; Davies, P J 6 ; Donaldson, L 10 ; Fang, Y 2 ; Fujita, H 2 ; Gey, G 2 ; Hoang, T H 2 ; Ichige, N 11 ; Ideguchi, E 2 ; Inoue, A 2 ; Isaak, J 2 ; Iwamoto, C 12 ; Jenkins, D G 6 ; Jin, O H 2 ; Klaus, T 5 ; Kobayashi, N 2 ; Koike, T 11 ; Krzysiek, M 13 ; Raju, M Kumar 2 ; Liu, M 14 ; Maj, A 9 ; Montanari, D 15 ; Morris, L 6 ; Noji, S 16 ; Pickstone, S G 17 ; Savran, D 18 ; Spieker, M 19 ; Steinhilber, G 5 ; Sullivan, C 20 ; Wasilewska, B 9 ; Werner, V 5 ; Yamamoto, T 2 ; Yamamoto, Y 2 ; Zhou, X 14 ; Zhu, S 7 

 Università degli Studi di Milano and INFN, Milano, I-20133, Italy 
 Osaka Univ., RCNP, Ibaraki, Osaka 5670047, Japan 
 INFN Sez. di Milano, Milano, I-20133, Italy 
 Extreme Light Infrastructure - Nuclear Physics, “Horia Hulubei” National Institute for R&D in Physics and Nuclear Engineering, 30 Reactorului Str., 077125 Bucharest-Magurele, Romania Extreme Light Infrastruct. Nucl. Phys., 30 Reactorului, Bucharest 077125, Romania 
 Tech. Univ. Darmstadt, Inst. Kernphys., D-64289 Darmstadt, Germany 
 Univ. of York, Dept. Phys., York YO10 5DD, N Yorkshire, England 
 Argonne Natl. Lab., Div. Phys, Argonne, IL 60439 USA 
 US Army Res. Lab., Adelphi, MD 20783 USA 
 Institute of Nuclear Physics Polish Academy of Sciences, ul. Radzikowskiego 152, 31-342 Krakow, Poland 
10  Univ. Witwatersrand, Sch. Phys, ZA-2050 Johannesburg, South Africa 
11  Tohoku Univ., Dept. Phys., Sendai, Miyagi 9808578, Japan 
12  Center for Nuclear Study (CNS), University of Tokyo 
13  Extreme Light Infrastructure - Nuclear Physics, “Horia Hulubei” National Institute for R&D in Physics and Nuclear Engineering, 30 Reactorului Str., 077125 Bucharest-Magurele, Romania Extreme Light Infrastruct. Nucl. Phys., 30 Reactorului, Bucharest 077125, Romania; Institute of Nuclear Physics Polish Academy of Sciences, ul. Radzikowskiego 152, 31-342 Krakow, Poland 
14  Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China 
15  Univ. Strasbourg, CNRS IN2P3, Inst. Plur. Hubert Curien, Strasbourg, France 
16  FRIB, Michigan State University, South Shaw Lane, East Lansing, MI 48824 
17  Univ. of Cologne, Inst. Nucl. Phys., Zulpicher Str 77, D-50937 Cologne, Germany 
18  GSI Helmholtzzentrum Schwerionenforsch. GmbH, EMMI, D-64291 Darmstadt, Germany 
19  Univ. of Cologne, Inst. Nucl. Phys., Zulpicher Str 77, D-50937 Cologne, Germany; Present address: Michigan State Univ, Natl. Supercond. Cyclotron Lab., E Lansing, MI 48824 USA 
20  Michigan State Univ, Natl. Supercond. Cyclotron Lab., E Lansing, MI 48824 USA; Michigan State Univ, Joint Inst. Nucl. Astrophys., Ctr. Evolut. Elements, E. Lansing, MI 48824 USA; Michigan State Univ., Dept. Phys. & Astron., E Lansing, MI 48824 USA 
Publication year
2018
Publication date
May 2018
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2572243975
Copyright
© 2018. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.