- qspec.v_e ( e , m , v0 = 0 , relativistic = True )[source]
The velocity $v = \begin{cases}c\sqrt{1 - \left[\gamma(v_0) + E / (mc^2)\right]^{-2}}, & \mathrm{True}\\ \sqrt{v_0^2 + 2E / m}, & \mathrm{False}\end{cases}$
- Parameters:
-
- earray_like
The energy $E$ added to the kinetic energy of a body with velocity
v0
(eV).- marray_like
The mass $m$ of the body (u).
- v0array_like
The initial velocity $v_0$ of the body (m/s).
- relativisticbool
The calculation is performed either relativistically (
True
) or classically (False
). The default isTrue
.
- Returns:
-
- outndarray
The velocity $v$ of a body with mass
m
and velocityv0
after the addition of the energye
(m/s).