Event-by-event analysis of collision-induced cluster-ion fragmentation: sequential monomer evaporation versus fission reactions.

نویسندگان

  • F Gobet
  • B Farizon
  • M Farizon
  • M J Gaillard
  • S Louc
  • N Gonçalves
  • M Barbatti
  • H Luna
  • G Jalbert
  • N V de Castro Faria
  • M C Bacchus-Montabonel
  • J P Buchet
  • M Carré
  • T D Märk
چکیده

The most abundant decay channels have been studied quantitatively for high-energy (60 keV/amu) cluster ions H (3) (+)(H (2))(m = 1-14) colliding with He atoms employing a recently developed multicoincidence technique for the simultaneous detection of the correlated fragments on an event-by-event basis. This allows us to identify decay reactions and their underlying decay mechanisms responsible for the occurrence of the U-shaped fragmentation pattern.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Dissociation, Fragmentation and Fission of Simple Metal Clusters *

Dissociation, fragmentation, and fissioning processes underly physical and chemical phenomena in a variety of finite-size systems, characterized by a wide spectrum of energy scales, nature of interactions, and characteristic spatial and temporal scales. These include nuclear fission [1,2], unimolecular decay and reactions in atoms and molecules [3], and more recently dissociation and fragmentat...

متن کامل

Fragmentation, Reaction and Photodetachment of Mass Separated Cluster Ions

Mass separated metal and semiconductor cluster ion beams have been produced by sputtering as well as laser evaporation. During and after the prpduction process, sputtered clusters fragment at a high rate. cooling of laser evaporated clusters in a He carrier gas results in stable configurations. The spontaneous fragmentation, fragmentation in collisions, chemical reactions with clusters, and pho...

متن کامل

Fluctuations of fragment observables

This contribution presents a review of our present theoretical as well as experimental knowledge of different fluctuation observables relevant to nuclear multifragmentation. The possible connection between the presence of a fluctuation peak and the occurrence of a phase transition or a critical phenomenon is critically analyzed. Many different phenomena can lead both to the creation and to the ...

متن کامل

A model for consecutive spallation and fragmentation reactions in inverse kinematics at relativistic energies

Secondary reactions induced by relativistic beams in inverse kinematics in a thick target are relevant in several fields of experimental physics and technology, like secondary radioactive beams, production of exotic nuclei close to the proton drip line, and cross-section measurements for applications of spallation reactions for energy production and incineration of nuclear wastes. A general mat...

متن کامل

Sequential And Double Sequential Fission Observed In Heavy Ion Interaction Of (11.67 MeV/u)197Au Projectile With 197Au Target

The heavy ion interaction of 11.67 MeV/u 197Au+ 197Au has been investigated using mica as a passive detector. By employing Solid State Nuclear Track Detection Technique the data of elastic scattering as well as inelastic reaction channel was collected. The off-line data analysis of multi-pronged events was performed by measuring the three-dimensional geometrical coordinates of correlated tracks...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Physical review letters

دوره 86 19  شماره 

صفحات  -

تاریخ انتشار 2001