Systematic measurements of electron and proton multiple scattering with energies up to 5 MEV

• Grant number: 16/13116-5
• Support type: Research Grants - Young Investigators Grants
• Duration: June 01, 2017 - May 31, 2022
• Field of knowledge: Physical Sciences and Mathematics - Physics - Atomic and Molecular Physics
• Principal researcher: Alessio Mangiarotti
• Grantee: Alessio Mangiarotti
• Home Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Assoc. researchers: Alexandre Almeida Malafronte ; Cleber Lima Rodrigues ; José María Fernández Varea ; Manfredo Harri Tabacniks ; Marcos Nogueira Martins ; Nora Lia Maidana ; Tiago Fiorini da Silva ; Vito Roberto Vanin
• Associated scholarship(s): 17/12661-2 - Integrated measurements of multiple scattering of electrons with energies up to 1.9 MeV, BP.PD

Abstract

The goal of the present project is to collect a reference set of measurements of electron and proton multiple elastic scattering with rigorous quantification of the statistical and systematic uncertainties. The electron and proton beams available at the Laboratório do Acelerador Linear (LAL) (energies continuously variable from 10 keV to 100 keV, and of 1.9 MeV and 5.0 MeV) and at the Laboratório de Análise de Materiais por Feixes Iônicos (LAMFI) (energies continuously variable from 800 keV to 4.0 MeV), respectively, will be used for the measurements. This is a fundamental issue for several applications ranging from depth profiling in ion beam analysis to absorbed dose localisation in radiation therapy and momentum resolution of tracking detectors in particle physics. Unfortunately, almost all existing experimental data are rather old and lack a complete quantification of the systematic uncertainties. Recent data were not measured under well controlled conditions. A key ingredient of the present project will be a careful characterisation of: i) target thickness; ii) target contamination and iii) target non uniformity. An extensive range of Z-particle energy-target thickness combinations will be covered searching for the most sensitive conditions to discriminate between different theoretical approaches and Monte Carlo implementations. Long-term benefits include the implantation of a competence on electron spectroscopy at LAL and the setup of a long term cooperation between LAL and LAMFI with the goal to achieve a consistent description of the interaction of electrons and protons with matter for other processes beyond multiple scattering. (AU)

Scientific publications

(10)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MANGIAROTTI, A.; SONA, P.; UGGERHOJ, I, U. Comparison with experimental data of different theoretical approaches to high-energy electron bremsstrahlung including quantum coherence effects. Physical Review D, v. 104, n. 9 NOV 1 2021. Web of Science Citations: 0.

MANGIAROTTI, A.; LAUTH, W.; JAKUBASSA-AMUNDSEN, D. H.; KLAG, P.; MALAFRONTE, A. A.; MARTINS, M. N.; NIELSEN, C. F.; UGGERHOJ, I, U. Spectral distribution and Coulomb correction for nuclear bremsstrahlung induced by heavy targets. Physics Letters B, v. 815, APR 10 2021. Web of Science Citations: 0.

MALAFRONTE, A. A.; PETRI, A. R.; GONCALVES, J. A. C.; BARROS, S. F.; BUENO, C. C.; MAIDANA, N. L.; MANGIAROTTI, A.; MARTINS, M. N.; QUIVY, A. A.; VANIN, V. R. A low-cost small-size commercial PIN photodiode: I. Electrical characterisation and low-energy photon spectrometry. Radiation Physics and Chemistry, v. 179, FEB 2021. Web of Science Citations: 0.

FERRO, RAFAEL M.; MANGIAROTTI, ALESSIO; FERNANDEZ-VAREA, JOSE M. Calculation of secondary electron bremsstrahlung in the binary encounter approximation using Dirac-Hartree-Fock-Slater velocity distributions. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIO, v. 478, p. 70-79, SEP 1 2020. Web of Science Citations: 0.

MANGIAROTTI, A.; JAKUBASSA-AMUNDSEN, D. H.; MARTINS, M. N. On higher-order corrections to nuclear bremsstrahlung cross sections. Radiation Physics and Chemistry, v. 167, FEB 2020. Web of Science Citations: 0.

BARROS, SUELEN F.; VANIN, VITO R.; MANGIAROTTI, ALESSIO; MAIDANA, NORA L.; FERNANDEZ-VAREA, JOSE M. Atomic alignment of Ta-73, W-74, and Au-79 after L-3 subshell ionization by 10-100-keV electron impact. Physical Review A, v. 100, n. 6 DEC 10 2019. Web of Science Citations: 0.

JAKUBASSA-AMUNDSEN, D. H.; MANGIAROTTI, A. Accuracy of analytical theories for relativistic bremsstrahlung. Physical Review A, v. 100, n. 3 SEP 9 2019. Web of Science Citations: 1.

MANGIAROTTI, A.; MARTINS, M. N.; VANIN, V. R. Analytic calculations of electron-nucleus bremsstrahlung cross sections above a few MeV including higher-order corrections and multiple scattering in the target. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIO, v. 446, p. 58-76, MAY 1 2019. Web of Science Citations: 1.

MANGIAROTTI, A.; MARTINS, M. N. A review of electron nucleus bremsstrahlung cross sections between 1 and 10 MeV. Radiation Physics and Chemistry, v. 141, p. 312-338, DEC 2017. Web of Science Citations: 8.

MANGIAROTTI, A.; JAKUBASSA-AMUNDSEN, D. H. Higher-order theories for relativistic electron-atom bremsstrahlung in comparison with experiment. Physical Review A, v. 96, n. 4 OCT 9 2017. Web of Science Citations: 5.