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Nuclear Multifragmentation Time Scale and Fluctuations of the Largest Fragment Size

机译：核多片段化时间尺度和最大片段大小的波动

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摘要

Distributions of the largest fragment charge, Z_(max), in multifragmentation reactions around the Fermi energy can be decomposed into a sum of a Gaussian and a Gumbel distribution, whereas at much higher or lower energies one or the other distribution is asymptotically dominant. We demonstrate the same generic behavior for the largest cluster size in critical aggregation models for small systems, in or out of equilibrium, around the critical point. By analogy with the time-dependent irreversible aggregation model, we infer that Z_(max) distributions are characteristic of the multifragmentation time scale, which is largely determined by the onset of radial expansion in this energy range.
机译：在费米能量周围的多片段反应中，最大碎片电荷Z_（max）的分布可以分解为高斯分布和Gumbel分布的总和，而在更高或更低的能量下，一个或另一个分布是渐近占优势的。我们在临界点附近的平衡或不平衡的小型系统的关键聚集模型中，针对最大群集大小展示了相同的通用行为。通过与时间相关的不可逆聚集模型进行类比，我们推断Z_（max）分布是多碎片化时间尺度的特征，这主要由该能量范围内的径向扩展开始确定。

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  • 来源
    《Physical review letters》 |2013年第17期|172701.1-172701.6|共6页
  • 作者

    D. Gruyer; J.D. Frankland; R. Botet; M. Ploszajczak; E. Bonnet; A. Chbihi; G. Ademard; M. Boisjoli; B. Borderie; R. Bougault; D. Guinet; P. Lautesse; L. Manduci; N. Le Neindre; P. Marini; P. Pawlowski; M.F. Rivet; E. Rosato; G. Spadaccini; M. Vigilante; J. P. Wieleczko;

  • 作者单位

    GANIL, CEA-DSM/CNRS-1N2P3, Boulevard Henri Becquerel, F-14076 Caen CEDEX, France;

    GANIL, CEA-DSM/CNRS-1N2P3, Boulevard Henri Becquerel, F-14076 Caen CEDEX, France;

    Laboratoire de Physique des Solides, CNRS UMR8502, Universite de Paris-Sud Batiment 510, F-91405 Orsay CEDEX, France;

    GANIL, CEA-DSM/CNRS-1N2P3, Boulevard Henri Becquerel, F-14076 Caen CEDEX, France;

    GANIL, CEA-DSM/CNRS-1N2P3, Boulevard Henri Becquerel, F-14076 Caen CEDEX, France;

    GANIL, CEA-DSM/CNRS-1N2P3, Boulevard Henri Becquerel, F-14076 Caen CEDEX, France;

    Institut de Physique Nucleaire, CNRS/IN2P3, Universite Paris-Sud 11, F-91406 Orsay CEDEX, France;

    GANIL, CEA-DSM/CNRS-1N2P3, Boulevard Henri Becquerel, F-14076 Caen CEDEX, France,Departement de physique, de genie physique et d'optique, Universite Laval, Quebec, G1V 0A6 Canada;

    Institut de Physique Nucleaire, CNRS/IN2P3, Universite Paris-Sud 11, F-91406 Orsay CEDEX, France;

    LPC, CNRS/IN2P3, Ensicaen, Universite de Caen, F-14050 Caen CEDEX, France;

    Institut de Physique Nucleaire, Universite Claude Bernard Lyon 1, CNRS/IN2P3, F-69622 Villeurbanne CEDEX, France;

    Institut de Physique Nucleaire, Universite Claude Bernard Lyon 1, CNRS/IN2P3, F-69622 Villeurbanne CEDEX, France;

    Ecole des Applications Militaires de l'Energie Atomique, B.P 19, F-50115 Cherbourg, France;

    LPC, CNRS/IN2P3, Ensicaen, Universite de Caen, F-14050 Caen CEDEX, France;

    GANIL, CEA-DSM/CNRS-1N2P3, Boulevard Henri Becquerel, F-14076 Caen CEDEX, France;

    H. Niewodniczanski Institute of Nuclear Physics, PL-31342 Krakow, Poland;

    Institut de Physique Nucleaire, CNRS/IN2P3, Universite Paris-Sud 11, F-91406 Orsay CEDEX, France;

    Dipartimento di Scienze Fisiche e Sezione INFN, Universita di Napoli 'Federico II,' I-80126 Napoli, Italy;

    Dipartimento di Scienze Fisiche e Sezione INFN, Universita di Napoli 'Federico II,' I-80126 Napoli, Italy;

    Dipartimento di Scienze Fisiche e Sezione INFN, Universita di Napoli 'Federico II,' I-80126 Napoli, Italy;

    GANIL, CEA-DSM/CNRS-1N2P3, Boulevard Henri Becquerel, F-14076 Caen CEDEX, France;

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  • 正文语种 eng
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  • 关键词

    multifragment emission and correlations;

    机译：多片段发射及其相关性;

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