pyrex.AskaryanSignal.em_shower_profile

static AskaryanSignal.em_shower_profile(z, energy, density=0.92, crit_energy=0.0786, rad_length=36.08)

Calculates the electromagnetic shower longitudinal profile.

The longitudinal profile is calculated for a given distance, shower energy, density, critical energy, and electron radiation length in ice.

Parameters

zarray_like

Distance (m) along the shower at which to calculate the charge.

energyfloat

Energy (GeV) of the shower.

densityfloat, optional

Density (g/cm^3) of ice.

crit_energyfloat, optional

Critical energy (GeV) for shower formation.

rad_lengthfloat, optional

Electron radiation length (g/cm^2) in ice.

Returns

array_like

The number of particles at the given distance along the shower.

Notes

Profile calculated by the Greisen model [1], based on equations 24 and 25 of the radar feasibility paper [2].

References

1

K. Greisen, “The Extensive Air Showers.” Prog. in Cosmic Ray Phys. III, 1 (1956).

2

K.D. de Vries et al, “On the feasibility of RADAR detection of high-energy neutrino-induced showers in ice.” Astropart. Phys. 60, 25-31 (2015). arXiv:1312.4331 DOI:10.1016/j.astropartphys.2014.05.009