Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

Photon Calc Screenshots

iPad

iPhone

About Photon Calc

Photon Calc displays cross sections for gamma / x-ray photons, fluorescence and edge energies, and allows you to calculate the transmission and attenuation for an arbitrary photon energy.

Information for 94 elements is available.

General information about the element is displayed, such as the atomic number and mass, density, and the fluorescence and edge energies (the number displayed depends on the element selected).

By entering in the photon energy in kV, the following values are calculated, based on the McMaster data:

• Mean Free Path in cm
• Absorption Coefficient in cm
• Total cross section
• Coherent cross section
• Incoherent cross section
• Photoelectric cross section

Next you can enter in the thickness in cm, and the transmission and attenuation values (ranging from 0 to 1) will be calculated and displayed.

What's New in the Latest Version 1.2

Last updated on Jan 25, 2024

Old Versions

Updates for latest iOS version

Version History

1.2

Jan 25, 2024

Updates for latest iOS version

1.1

Oct 21, 2015

This app has been updated by Apple to display the Apple Watch app icon.

Fixed a bug that could cause a crash with iOS 9.

1.0.0

Feb 10, 2009

Feedback Report

Photon Calc FAQ

What country or region is Photon Calc available in?

Photon Calc is available in regions other than the following restricted countries:

Myanmar,Afghanistan,Zambia,Cote Divoire,Cameroon,Tonga,Maldives,Congo, Democratic Republic,Montenegro,Vanuatu,Bosnia & Herzegovina,Libya,Nauru,Gabon,Morocco,Georgia,Rwanda,Kosovo,Serbia,Iraq