The nuclear spin response to intermediate energy protons

doi:10.1016/0370-2693(90)91185-E

Physics Letters B

Volume 237, Issues 3–4, 22 March 1990, Pages 337-340

https://doi.org/10.1016/0370-2693(90)91185-E Get rights and content

Abstract

Measurements of the spin-flip probability S_nn for inclusive inelastic proton scattering around 300 MeV from nuclei between ¹²C and ⁹⁰Zr show that an enhanced spin response near 40 MeV excitation at q ∼ 100 MeV/c is a general feature of nuclear structure. Data for ⁴⁰Ca at 800 MeV confirm that the enhancement is not a peculiarity of 300 MeV scattering. In addition, measurements in ⁴⁴Ca up to 75 MeV show that the enhancement cannot be attributed solely to a relatively narrow resonance. Continuum RPA calculations suggest that the enhancement is due to the exhaustion of most S = 0 strength at lower energy and a shift of S = 1 strength to higher energy.

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Citation Excerpt :
For theoretical analysis of elastic and inelastic scattering see [1990TA13,1990TA16,1991LI07,1991TA01,1992WA19,1993BY02,1993DE33,1995MA23,1996BE25,1997DO02,1997TE14,1998GI01,1998GU13,1998KI17,1998SU23,1999GU17,1999NA43,2000CH31,2000DE37,2000LO20,2004YA24,2005PI16,2006GU23,2008FR02,2013WE05,2015TO11]. Analyses of spin observables and polarized beam results are found in [1990BA14,1990HA45,1990ST32,1990TA17,1991BE45,1992BE03,1992BE24,1992SH01,1993CH14,1993CO02,1993KA45,1993LA27,1994DO03,1994HI02,1994PH02,1994WI09,1995BU37,1995CH12,1995CH44,1995DE32,1995DO31,1995KA24,1996DE31,1996KA65,1997BB17,1997DO01,1998DO16,1998HI02,1999AN32,2000WE01,2001HI10,2001RA06,2004CU02,2005DE32,2006ON03,2007KH12,2007YA13,2008FU13,2008KI13,2009CO17,2010NA18,2011FU16,2013PL02,2014PL05]. Global studies evaluating protons on a variety of targets are given in [1990BA14,1990BA61,1990HU09,1990KA05,1990PH02,1990ST32,1992KO04,1993BE10,1993CH14,1993CO02,1993KA45,1994HA48,1994WI09,1995CH12,1995CH44,1995ER10,1996GO48,1997DO01,1998DO16,1999KU07,2000DE43,2000KE13,2001KA58,2002DI04,2002FA14,2002SA49,2002TR12,2005DE32,2005KI04,2005KO28,2007KH12,2007TA27,2008FU13,2008HA03,2008KI13,2009CO17,2009WE04,2010NA18,2012DY01,2012PA09,2013ZU04,2014HL01,2015AR01,2015BE12,2016AR13].
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The experimental data are evaluated for known nuclides of mass number A=44 (Si,P,S,Cl,Ar,K,Ca,Sc,Ti,V, Cr,Mn). Detailed evaluated level properties and related information are presented, including adopted values of level and γ-ray energies, decay data (energies, intensities and placement of radiations), and other spectroscopic data. This work supersedes earlier full evaluations of A=44 published by 1999Ca45 and 1990En08 (also 1998En04 update).
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^☆: This work was supported in part by the National Science Foundation and the US Department of Energy, and by the Canadian Natural Sciences and Engineering Research Council. We are grateful to the staffs at LAMPF and TRIUMF for considerable technical support, and to H. Esbensen and L. Zamick for their important theoretical contributions.

¹: Present address: Ohio University, Athens, OH 45701, USA.

²: Present address: University of South Carolina, Columbia, SC 29208, USA.

³: Present address: Los Alamos National Laboratory, Los Alamos, NM 87545, USA.

⁴: Present address: Indiana University Cyclotron Facility, Bloomington, IN 47405, USA.

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The nuclear spin response to intermediate energy protons☆

Abstract

Ann. Phys.

Phys. Rev. C

Phys. Rev. Lett.

Nucl. Instrum. Methods A

Phys. Rev. C