radhub.rpp.rpp_vec

radhub.rpp.rpp_vec(F, w, h, l, Qcrit, density=2.321, ionization=3.6)

The rectangular parallelepiped method for single event rate calculations ([1] Eq 4).

\[I \cdot \pi \cdot A \cdot Q_{crit} \cdot \int_{L_{min}}^{L_{max}} \frac{1}{L^2} \cdot D(p(L)) \cdot F(L) dL\]

where

\(I = ionization / q \times 10^{-12} \times 10^{-6}\) MeV/pC

\(L_{min} = \frac{I \cdot Q_{crit}}{p_{max}}\) MeV-cm2/g

\(L_{max} = 1.02 \cdot 10^5\) MeV-cm2/g

\(p(L) = \frac{I \cdot Q_{crit}}{L}\) g/cm2

\(p_{max} = \sqrt{(w \cdot density)^2 + (h \cdot density)^2 + (l \cdot density)^2}\) g/cm2

Parameters

  • F (callable) – Flux function accepting LET in MeV-cm2/g and returning particles/cm2-s-sr

  • w (float) – RPP dimension of width w cm

  • h (float) – RPP dimension of height h cm

  • l (float) – RPP dimension of length l cm

  • Qcrit (float) – Critical charge in pC

  • density (float, optional) – Target material density in g/cm3, default 2.32

  • ionization (float, optional) – Ionization energy in eV, default 3.6

Returns

rate in event / second

Return type

float

References

[1] J. H. Adams, “Cosmic Ray Effects on Microelectronics. Part IV.,” NRL Memorandum Report 5901 (December 1986).

[2] J. Adams, “The Variability of Single Event Upset Rates in the Natural Environment,” IEEE TNS, vol. NS-30, no. 6, Dec. 1983.