[1] Univ Estadual Campinas, GlebWataghin Phys Inst, Campinas, SP, Brazil
[2] Univ Fed Alagoas, Inst Fis, Maceio, AL, Brazil
[3] Univ Fed Pernambuco, Dept Biofis Radiobiol, Recife, PE, Brazil
[4] Univ Nacl Colombia Sede Medellin, Sch Phys, A A 3840, Medellin 050034, Colombia
[5] Pontificia Univ Catolica Valparaiso, Inst Fis, Fac Ciencias, Valparaiso, Chile
[6] Pontificia Univ Catolica Valparaiso, Sch Elect Engn, Valparaiso, Chile
[7] Univ Buenos Aires, Inst Fis Buenos Aires IFIBA, Fac Ciencias Exactas & Nat, Dept Fis, RA-1428 Buenos Aires, DF, Argentina
[8] Univ Prebiteriana Mackenzie, Sch Engn, Sao Paulo, SP, Brazil
[9] Mackenzie Presbyterian Inst, MackGraphe, Sao Paulo, SP, Brazil
[10] Univ Nacl Cuyo UNCUYO, Ctr Atom Bariloche, Comis Nacl Energia Atom CNEA, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina
[11] Univ Nacl Cuyo UNCUYO, Inst Balseiro, Comis Nacl Energia Atom CNEA, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina
[12] Univ Fed Pernambuco, Dept Fis, Recife, PE, Brazil
[13] Brazilian Agr Res Corp Embrapa, Embrapa Instrumentat, Sao Carlos, SP, Brazil
[14] Univ Concepcion, Dept Fis, 160-C, Concepcion, Chile
[15] Univ Concepcion, Millennium Inst Res Opt, 160-C, Concepcion, Chile