AtomicAndPhysicalConstants.jl

AtomicAndPhysicalConstants.jl

AtomicAndPhysicalConstants.jl provides a quick way to access information about different species and physical constants optimized for faster compile time and simulations.

It is designed to provide atomic and physical constants including things like the speed of light, subatomic particle properties, atomic isotope properties, etc.

Values are obtained from CODATA (Committee on Data of the International Science Council), NIST (National Institute of Standards and Technology), and PDG (Particle Data Group). This package enables users to access and customize units for the constants.

The package is compatible with Julia's Unitful.jl library for convenient unit manipulation.

AtomicAndPhysicalConstants.jl has the following main features and advantages:

1. Simple Unit Manipulation: Users can define the units they want to use in a simple and consistent way. Unitful.jl provides a simple way to do unit conversion and calculations.
2. Rigorous and Up-to-Date Data: We uses the most updated values from creditable sources. We also provided the option to use past data for specific purposes.
3. Simple usage: Users can access data of a wide range of particles and physic constants by simply defining a species with their name or call a variable in the namespace.

Setup

Basic Usage

Defining Physical Constants

The macro @APCdef helps you define a set of useful physical constants in your namespace.

julia> @APCdef
julia> C_LIGHT
2.99792458e8

Users have the options for choosing the type and unit of the constants, see this page

Defining Species

The constructor Species() helps you create a structure with all the information of the species stored in it.

julia> e = Species("electron")
julia> hydrogen = Species("H")

You could use getter functions to access its properties or directly calling its fields.

julia> massof(e)
510998.95069
julia> hydrogen.spin
1.0 h_bar

See more about Species() constructors and getter functions here