Research into the advanced experimental methods for precision ion stopping range measurements in matter

Abstract

The article presents the results of the experimental research on precision measurement of total stopping range and energy deposition function of intermediate and heavy ion beams in cold solid matter. The "thick target" method proves to be appropriate for this purpose. Two types of detectors were developed which provide an error of the total stopping range measurement of less than 3% and of the beam energy deposition function of about 7%. The experiments with 58 Ni ϩ26 , 197 Au ϩ65 , and 238 U ϩ72 ion beams in the energy range 100-300 MeV0u were performed on SIS-18~Gesellschaft für Schwerionenforschung, Darmstadt! in 1999Darmstadt! in -2001 The measured data on the total stopping ranges for the above ion species in bulk and foiled Al and Cu targets are presented. The investigation showed that there is a noticeable discrepancy between the measured stopping ranges and the theoretically predicted ones. Also, it was shown that realistic ion energy deposition depends on the type of target~bulk or foiled!. Further investigation is necessary to clarify the latter.

Inertial fusion energy issues of intense heavy ion and laser beams interacting with ionized matter studied at GSI-Darmstadt

“…The main goal of the current experiments is to understand the details of the energy deposition of the fast heavy ion penetrating solid matter [26]. This depends on the charge state distribution and velocity of the ion inside the target volume as well as on the target density.…”

Frontiers of dense plasma physics with intense ion and laser beams and accelerator technology

“…Tabulated results differ by as much as 30%. A project to measure the total range of ions in an energy range from 5 MeV u −1 up to 300 MeV u −1 with a precision better than a few per cent has been initiated using novel techniques of highly efficient spectroscopy and calorimetric measurements [30].…”