Stopping Power Calculator


Calculating stopping power is crucial in various fields, including physics, engineering, and materials science. It refers to the ability of a material to reduce the kinetic energy of charged particles as they pass through it. Whether you’re a student, researcher, or professional, having access to a stopping power calculator can simplify complex calculations. In this article, we’ll explore how to use a stopping power calculator effectively, its underlying formula, provide an example solve, address common questions, and conclude with its significance.

How to Use

To utilize the stopping power calculator effectively, follow these simple steps:

  1. Input the required parameters, such as particle velocity, charge, and the material through which it is passing.
  2. Click the “Calculate” button to obtain the stopping power value.
  3. Analyze the result for your application or research needs.


The stopping power S of a material for a charged particle is often calculated using the Bethe formula, given by:


  • e is the elementary charge,
  • z is the charge of the particle,
  • N is the number of atoms per unit volume,
  • Z is the atomic number of the material,
  • m is the rest mass of the particle,
  • v is the velocity of the particle, and
  • I is the mean excitation energy of the material.

Example Solve


Q: What units are used for the input parameters in the calculator?
A: Ensure consistent units such as meters for distance, kilograms for mass, and seconds for time to obtain accurate results.

Q: Can the stopping power calculator be used for any material and particle combination?
A: Yes, the calculator is applicable to various materials and charged particles, but ensure the material’s properties and particle parameters are correctly input.

Q: Is the Bethe formula the only method to calculate stopping power?
A: While the Bethe formula is commonly used, other empirical or theoretical models may also exist for specific scenarios.


In conclusion, the stopping power calculator serves as a valuable tool for physicists, engineers, and researchers in understanding the interaction of charged particles with materials. By following the provided guidelines and utilizing the Bethe formula, accurate stopping power values can be obtained efficiently, aiding in various scientific endeavors.

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