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Re-examination of Energy-Loss Straggling Calculations of Alpha Particles at 5.486 MeV
New Phys.: Sae Mulli 2020; 70: 153~160
Published online February 28, 2020;
© 2020 New Physics: Sae Mulli.

Nguyen Ngoc DUY*1,2, Nguyen Kim UYEN3, Vinh N. T. PHAM4

1Theoretical Particle Physics and Cosmology Research Group, Advanced Institute of Materials Science, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
2Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
3Department of Physics, Sungkyunkwan University, Suwon 16419, South Korea
4Ho Chi Minh City University of Education, Ho Chi Minh City 748342, Vietnam
Correspondence to:
Received November 13, 2019; Revised January 21, 2020; Accepted January 21, 2020.
cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
We report on an evaluation of energy-loss straggling calculations performed using the LISE++ code and theoretical models. The energy-loss straggling of the alpha particles at 5.486 MeV in Al, Cu, Ag, Tb, Ta, and Au was calculated by using the LISE++ code and the Titeica model. The results of the calculations were compared to the measured data to improve the accuracy of the straggling predictions. The results show that the straggling is increased by the energy loss at a rate of 8.0 keV%. The uncertainties of the LISE++ and Titeica calculations were reduced to about 15% by adding fitting parameters. We also propose a new semi-empirical formula which well reproduces the measured data with an uncertainty of about 20% for 5.486-MeV alpha particles in the materials used in the research.
PACS numbers: 29.27.-a, 29.27.Eg, 29.38.-c, 29.90.+r, 29.20.-c
Keywords: Energy loss, Window foils, Thick target, In-flight beam production, Energy spread

March 2020, 70 (3)
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