Experimental evidence of independence of nuclear de-channeling length on the particle charge sign E. Bagli, V. Guidi, A. Mazzolari, L. Bandiera, G. Germogli, A. I. Sytov, D. De Salvador, A. Berra, M. Prest and E. Vallazza Eur. Phys. J. C, 77 2 (2017) 71 Published online: 04 February 2017 DOI: 10.1140/epjc/s10052-017-4642-y