Target residues formed in the 4.4 GeV deuteron-induced reaction on gold

Abstract

The cross sections of 110 radioactive nuclide with mass numbers 22 ≤ A ≤ 198 amu from the interaction of 2.2 GeV/nucleon deuterons from the Nuclotron of the Laboratory of High Energies (LHE), Joint Institute for Nuclear Research (JINR) at Dubna with a 197 Au target are investigated using induced activity method. The results including charge and mass distributions are parameterized in terms of 3-parameter equation in order to complete the real isobaric distribution. Using data from charge distribution total mass-yield distribution was obtained. The analysis of the mass-yield distribution allows to suppose existence of different channels of the interaction such as spallation, deep spallation, fission-like and multifragmentation processes.

Synthesis of neutron-rich transuranic nuclei in fissile spallation targets

“…One can also note, see the discussion in Ref. [15] concerning d(4.4 GeV) + Au and d(7.3 GeV) + Au reactions, that the beam energy dependence of the yields of specific isotopes produced in fission and spallation reactions induced by deuterons is rather weak. This is explained by common reaction mechanisms which are in effect in the entire deuteron energy domain, including deuterons which were slowed down in the target material.…”

“…At the same time the ionization energy loss for deuterons, which is responsible for the stopping of beam particles without nuclear reactions, is equal to the energy loss for protons of the same energy per nucleon. As demonstrated by experimental studies of nuclear residues produced by 4.4 GeV deuterons on gold nuclei [15], the ratio of multiplicities of emitted particles for the deuteron-and proton-induced reactions calculated for 3 GeV protons is 1:5 AE 0:2. Following the findings of Refs.…”

“…Following the findings of Refs. [14,15], in the present study we propose deuterons for the irradiation of an Am(OH) 3 target to produce neutron-rich TRU nuclei, see Section 4.…”

Estudo de fissão e espalação em núcleos actinídeos e pré-actinídeos a energias intermediárias

“…197 Au em unidades de mb: dados experimentais ( ) [97], cálculo pelo modelo CRISP em linha tracejada (azul), dados obtidos do modelo de Botvina em linha pontilhada (preto) [102].…”

“…[97], cálculo pelo modelo CRISP em linha tracejada (azul), aqui foi considerando apenas 9% do resultado do CRISP (para fissão e espalação). Dados obtidos do modelo de Botvina é mostrada em linha pontilhada (preto) [102].…”