What is Stopping power: Definition and 17 Discussions

Stopping power is the ability of a weapon – typically a ranged weapon such as a firearm – to cause a target (human or animal) to be incapacitated or immobilized. Stopping power contrasts with lethality in that it pertains only to a weapon's ability to make the target cease action, regardless of whether or not death ultimately occurs. Which ammunition cartridges have the greatest stopping power is a much debated topic.
Stopping power is related to the physical properties and terminal behavior of the projectile (bullet, shots or slug), the biology of the target, and the wound location, but the issue is complicated and not easily studied. Although higher-caliber ammunitions usually have greater muzzle energy and momentum and thus traditionally been widely associated with higher stopping power, the physics involved are multifactorial, with caliber, muzzle velocity, bullet mass, bullet shape and bullet material all contributing.
Despite much disagreement, the most popular theory of stopping power is that it is usually caused not by the force of the bullet but by the wounding effects of the bullet, which are typically a rapid loss of blood causing a circulatory failure, which leads to impaired motor function and/or unconsciousness. The "Big Hole School" and the principles of penetration and permanent tissue damage are in line with this way of thinking. The other prevailing theories focus more on the energy of the bullet and its effects on the nervous system, including hydrostatic shock and energy transfer, which is similar to kinetic energy deposit.

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  1. J

    A Calculate the energy-loss straggling of particles using LISE++

    Hello everyone, I am trying to calculate the energy loss and straggling of alpha particles with same energy, I used LISE++ to obtain the energy loss in every layer of the materials using Spectrometer Design of LISE++, but I can only calculate the energy-loss straggling layer by layer. Does...
  2. emilmammadzada

    How can I find the stopping power for a single energy value in FLUKA?

    Hello friends. How can I find the stopping power for a single energy value in the fluka? Which card should I add to the input file for this?
  3. emilmammadzada

    How can I calculate the stopping power for aluminum in Fluka?

    How can I calculate the stopping power for aluminum in Fluka? I want to send 100 kevlik proton, I add deltaray card to target aliminuma.input file and this card is processing 10 MeV for some reason. TITLE * Set the defaults for precision simulations DEFAULTS...
  4. emilmammadzada

    Stopping power and projected range for FLUKA code

    How do I calculate the stopping power or projected range for aluminum in Fulka. And in which output file is this data located?How can I edit a change in the input file?
  5. emilmammadzada

    MCNP5 stopping power for input file

    Where can I find stopping power input file examples for mcnp5?
  6. S

    A Alpha Stopping Power Database for High Z Materials

    That's about it. I've been trying to do the calculation manually with Bethe-Bloche without corrections in the energy range I'm interested in (1-10 MeV) for the highest Z material with data available for validation (Uranium), but I can't get a result that agree well with the database, so I'm...
  7. FreeForAll

    Front brakes provide 70% of stopping power. But why?

    I'm not disputing that front brakes on a vehicle provide the majority of stopping power, but why is that? I originally thought it was because of added traction at the front due to weight transfer, but even my bike moving at a walking pace has more powerful front brakes than the identical rear...
  8. Javier Lopez

    I Stopping power for a proton ion gun through a Boron-11 sheet 1mm thick

    Hello, I need the stopping power for a proton ion gun through Boron-11 sheet 1mm thick. I have the following table obtained from here: https://www-nds.iaea.org/stopping/stopping_hydr.html Where the unit is in 1-15*eV*cm2/atom: Then I calculated for 600keV protons at table 5.1eV*cm2/atom. I...
  9. C

    I Total or kinetic energy in Bethe Bloch stopping power?

    The average loss of energy in a material per unit length of a particle (in particular an electron, which is stable) is described by the quantity ##dE/dx##. - for ionization it is given by the Bethe-Bloch formula $$-\left\langle {\frac {dE}{dx}}\right\rangle ={\frac {4\pi }{m_{e}c^{2}}}\cdot...
  10. parazit

    I Stopping Power and Range units for charged particles

    Dear members, The unit of stopping power is given as Mev/cm in many sources. It is easy to comprehend this unit.The mass stopping power, which is the total energy lost per path length by a charged particle, is defined as the division of MeV/cm to the density of investigated material, g/cm3, and...
  11. S

    Trouble using the Bethe Formula

    So I'm doing research with a professor and he wants me to use the Bethe formula to calculate stopping power for alpha particles of various energies, but I'm having a lot of trouble using it, and I figured I'd ask here before I bothered him. He wanted me to use the non-relativistic version listed...

    About the mass stopping power of muon

    Dear all, I calculated the mass stopping power of muon but the result was 1.4 MeV.g^-1.cm^2. I calculated by BEthe-Bloch formula. I think it is wrong. since I looked up in the books and internet, this value is about 2 MeV.g^-1.cm^2. Can you help me. I also send the excel file as below.
  13. C

    Bullet Energy Transfer (Stopping Power)

    I'm working on setting up an experiment to test, calculate and compare the "stopping power" of various defensive handgun loads. This experiment assumes that "stopping power" is some sort of calculation like "power"/penetration distance, meaning that the higher the "power" and shorter the...
  14. C

    Stopping power of ionizing radiation

    Hello All, can anyone fill in the Bethe formula (-dE/dx) with a. the information for an alpha particle? b. the information for a beta particle? Either one would be great!
  15. M

    Energy loss, stopping power equation,

    Homework Statement I need to estimate the energy loss of electrons before they reach a detector, but I am unsure how to do it. I think I am supposed to integrate the stopping power function over the total distance but I can't solve the equation... Homework Equations Stopping...
  16. J

    Calculating Bethe Stopping Power Constant: 606,235 or 78,500?

    The nonrelativistic Bethe stopping power function contains the constant 2*pi*N*e^4 where N is Avogadro's number and e is the electron charge. In the literature, this constant is often calculated to be 78,500. If calculate the constant, I get 606,235 (=2 * pi * 6.02214179E+23 mol^-1...
  17. E

    Bohr's calculation of stopping power

    so, hey...I'm pretty new to these forums and just needed help understanding a textbook that I'm reading. I'll give you all the background, but I'm not sure if it is necessary. They begin by considering a heavy particle of mass M and velocity v passing through a material with an atomic...