RELAXATION OF THE NEUTRON EXCESS DEGREE OF FREEDOM IN DEEP INELASTIC REACTIONS INDUCED BY HEAVY IONS

  • The isotopic distribution for DIR yields has been obtained for very asymmetricsystem 40Ar(E1ab=263MeV) + 238U. The fragment identification was done by the com-bination of two independent time of flight and two ΔE-E measurements. A simple classical model is presented to explain the experimental results for theN/Z degree of freedom. This model has also been tested for experimental results forvery asymmetric systems (40Ar+197Au, 32S+238U, 63Cu+232Th and 40Ar+232Th) reportedby other authors. The agreement between this classical calculation and all the experi-mental results appears to be satisfactory.
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  • [1] L.G. Moretbo- eat al., Int. Conf. on Nucl. interaction, Australia (1978), Int. Rxport LBL, 7757.[2] J.Galin et al., Z. Physik, A278(1976), 347.[3] B. G atty et al., Nucl. Phys., A253 (1975),511.[4] B. Gatty et al., Z. Physik, A273(1975), 65.[5] S. Agarwad et al., Nhcl. Phys.,A239(1977), 230.[6] J. Barette eb a.1., Nucl. Phys., A299(1978), 147.[7] P. Auger et al., Z. Physik A289(1979), 255.[8] J. Galin et al.. Z. Physik, A283(1977), 173.[9] J. Taasan-Got. These 3eme Cycle ORSAY, (1977).[10] J. C. Jacmart et al., Nucl. Phys., A242(1975), 175.[11] J. V. Kratz et al,,Rev. Lett., 39(1977), 984.[12] A. M. Zebelman et al., Nuel. Instr. and Meth., 141(1977), 439.[13] J. Guard, "Deteeteurs de temps zero utilisant de G. M. C" journee d'étucles, .Saclay 14-18 Mars(1977).[14] J. Pouthas, Nucl. Instr. and Meth., 135(1976), 187.[15] W. D. Myers et al., Nuc1. Phys., 81(1966), 1.[16] J. Galin et al., Phys. Rev., C9,(1974), 1018.[17] W. Norenbore, Proc. of the European conf. on Nucl, Phys. with heavy ions, Caen(1976).[18] S. Ayik et al.. Z, Physik, A279(1976), 145.[19] F. Plash et al., Phys. Rev. Lett., 40(1978). [20] A. Gavron et al., Int, Rep. WIS, 78/8-ph.[21] B.Tamain et al., Submitted to Nucl. Phys.[22] W. D. Myers, Droplet Model of Atomic Nuclei. pleuum (1918).[23] U. Brosa et, al., Z. Physik, A284(1978).65.[24] R. Babii}et et. al., Nucl. Phys., A296(1977),160.[25] L. G. Moretto et al., Int. Rep. Berkeley,(1978), LBL 7732.[26] P. Auger, Thèse 3eme Cycle ORSAY,(1979).
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Jiang Dong-xing. RELAXATION OF THE NEUTRON EXCESS DEGREE OF FREEDOM IN DEEP INELASTIC REACTIONS INDUCED BY HEAVY IONS[J]. Chinese Physics C, 1980, 4(4): 516-530.
Jiang Dong-xing. RELAXATION OF THE NEUTRON EXCESS DEGREE OF FREEDOM IN DEEP INELASTIC REACTIONS INDUCED BY HEAVY IONS[J]. Chinese Physics C, 1980, 4(4): 516-530. shu
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Received: 1979-08-20
Revised: 1900-01-01
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RELAXATION OF THE NEUTRON EXCESS DEGREE OF FREEDOM IN DEEP INELASTIC REACTIONS INDUCED BY HEAVY IONS

Abstract: The isotopic distribution for DIR yields has been obtained for very asymmetricsystem 40Ar(E1ab=263MeV) + 238U. The fragment identification was done by the com-bination of two independent time of flight and two ΔE-E measurements. A simple classical model is presented to explain the experimental results for theN/Z degree of freedom. This model has also been tested for experimental results forvery asymmetric systems (40Ar+197Au, 32S+238U, 63Cu+232Th and 40Ar+232Th) reportedby other authors. The agreement between this classical calculation and all the experi-mental results appears to be satisfactory.

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