barn
Introduced in 0.99
Synopsis

Conventional unit of nuclear quadrupole moments in SI units.

value = barn
[value,sigma] = barn
Description

barn returns the SI value of 1 barn (a common unit for nuclear electric quadrupole moments) in value and the standard deviation in sigma (if two output arguments are specified).

Reference

The value and the standard deviation are taken from the 2002 CODATA collection of recommended values.

See also

amu, avogadro, bmagn, bohrrad, boltzm, clight, echarge, emass, faraday, gfree, hartree, molgas, nmagn, nmass, planck, pmass, rydberg