. 2015 Oct 8;42(11):6234–6247. doi: 10.1118/1.4932217

TABLE II.

Edge or peak values in the fluence and dose spectra of ε/l.

Step limit (μm)	KE_R(keV)^a	S_el(keV μm⁻¹)^b	${(ε / l)}_{s}$ (keV μm⁻¹)^c	First edge (keV μm⁻¹)	Second peak (keV μm⁻¹)
1	50	77.4	50	NA	NA
5	320	53.2	64	NA	63
10	550	38.9	55	55	63
50	1560	19.0	31.2	31	63
100	2400	13.9	24	24	63
500	6000	6.85	12	23	63

^{^a}

KE_R stands for the kinetic energy of protons with a residual range equal to the step limit set in the simulation.

^{^b}

The electronic stopping power, S_el, was calculated using the pstar program (Ref. 40) for the kinetic energy of protons, KE_R.

^{^c}

${(ε / l)}_{s}$ is the quotient of KE_R and step limit set in the simulation.