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NSRL StackUp Calculator

The high energy beams available at NSRL allow for heavy ions with significant range across types of materials. In order to determine what beam conditions are appropriate for experiments and testing at NSRL, we offer an Excel-based calculator database so that users can explore how the beam energy, range of ions, and instantaneous energy transfer will behave based on a multi-layer transport approximation. A database of energy, range, dE/dx, and straggling information has been assembled for all ions available at NSRL and more across a selection of materials traditionally used by the heavy ion radiation field. This database is an extraction from the Stopping and Range of Ions in Matter (SRIM/TRIM) free software by J. F. Ziegler. This software uses a Monte Carlo binary collision approximation method to determine the values for range and stopping power for a given incident energy ion in a specific target material. For these calculations, a classical coulombic potential is combined with a semi-empirical screening function known colloquially as the ZBL potential which was developed in-part by Ziegler found in the citation below. More information about the SRIM software can be found at

Publications From SRIM

Ziegler, J. F., & Biersack, J. P. (1985). The Stopping and Range of Ions in Matter. In Treatise on Heavy-Ion Science (pp. 93–129). Springer US.

James F. Ziegler, M.D. Ziegler, J.P. Biersack (2010). SRIM – The stopping and range of ions in matter. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms Vol. 268. Elsevier.

NSRL StackUp Download Version 8, February 2023

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NSRL StackUp Tool Change Log

NSRL SRIM StackUp User Guide

For both E/ΔE/Δx Calculator and Multiple Layers Calculator, begin by selecting Target and Ion from the dropdown menu.

To Use E/ΔE/Δx Calculator

In the light-yellow colored boxes (located in column A), enter Energy (in MeV/nucleon), Range (in mm) or dE/dx (in MeV/(mg/cm2)) and the corresponding values for the other parameters will be calculated in the cells to the right.

Note: Each row is independent of the others.

To Use Multiple Layers Calculator

Enter desired Beam Energy (in MeV/nucleon) in box B17. Beginning at Layer 1, select material from the dropdown menu. Enter the associated layer Thickness (in mm) in the light-yellow box. Repeat this procedure (using the row for Layer 2, Layer 3, etc.) for all additional layers used in experimental setup to a maximum of ten layers. Layers beyond your entries can be ignored.

Note: Entrance and Exit Linear Energy Transfer (LET) values are calculated for material selected within that same row.

Note: Calculations are dependent on the Target and Ion selected in cell B2 and B3, respectively.