Measurement of La(,) cross section

La(,)断面積の測定

Terlizzi, R.*; Abbondanno, U.*; Aerts, G.*; lvarez, H.*; Alvarez-Velarde, F.*; Andriamonje, S.*; Andrzejewski, J.*; Assimakopoulos, P.*; Audouin, L.*; Badurek, G.*; Baumann, P.*; Bev, F.*; Berthoumieux, E.*; Calvio, F.*; Cano-Ott, D.*; Capote, R.*; Carrillo de Albornoz, A.*; Cennini, P.*; Chepel, V.*; Chiaveri, E.*; Colonna, N.*; Cortes, G.*; Couture, A.*; Cox, J.*; Dahlfors, M.*; David, S.*; Dillmann, I.*; Dolfini, R.*; Domingo-Pardo, C.*; Dridi, W.*; Durn, I.*; Eleftheriadis, C.*; Embid-Segura, M.*; Ferrant, L.*; Ferrari, A.*; Ferreira-Marques, R.*; Fitzpatrick, L.*; Frais-Koelbl, H.*; 藤井 香織*; Furman, W.*; Gallino, R.*; Goncalves, I.*; Gonzalez-Romero, E.*; Goverdovski, A.*; Gramegna, F.*; Griesmayer, E.*; Guerrero, C.*; Gunsing, F.*; Haas, B.*; Haight, R.*; Heil, M.*; Herrera-Martinez, A.*; 井頭 政之*; Isaev, S.*; Jericha, E.*; Kadi, Y.*; Kppeler, F.*; Karamanis, D.*; Karadimos, D.*; Kerveno, M.*; Ketlerov, V.*; Koehler, P.*; Konovalov, V.*; Kossionides, E.*; Krtika, M.*; Lamboudis, C.*; Leeb, H.*; Lindote, A.*; Lopes, I.*; Lozano, M.*; Lukic, S.*; Marganiec, J.*; Marques, L.*; Marrone, S.*; Mastinu, P.*; Mengoni, A.*; Milazzo, P. M.*; Moreau, C.*; Mosconi, M.*; Neves, F.*; Oberhummer, H.*; O'Brien, S.*; 大島 真澄; Pancin, J.*; Papachristodoulou, C.*; Papadopoulos, C.*; Paradela, C.*; Patronis, N.*; Pavlik, A.*; Pavlopoulos, P.*; Perrot, L.*; Plag, R.*; Plompen, A.*; Plukis, A.*; Poch, A.*; Pretel, C.*; Quesada, J.*; Rauscher, T.*; Reifarth, R.*; Rosetti, M.*; Rubbia, C.*; Rudolf, G.*; Rullhusen, P.*; Salgado, J.*; Sarchiapone, L.*; Savvidis, I.*; Stephan, C.*; Tagliente, G.*; Tain, J. L.*; Tassan-Got, L.*; Tavora, L.*; Vannini, G.*; Vaz, P.*; Ventura, A.*; Villamarin, D.*; Vincente, M. C.*; Vlachoudis, V.*; Vlastou, R.*; Voss, F.*; Walter, S.*; Wendler, H.*; Wiescher, M.*; Wisshak, K.*

Terlizzi, R.*; Abbondanno, U.*; Aerts, G.*; lvarez, H.*; Alvarez-Velarde, F.*; Andriamonje, S.*; Andrzejewski, J.*; Assimakopoulos, P.*; Audouin, L.*; Badurek, G.*; Baumann, P.*; Bev, F.*; Berthoumieux, E.*; Calvio, F.*; Cano-Ott, D.*; Capote, R.*; Carrillo de Albornoz, A.*; Cennini, P.*; Chepel, V.*; Chiaveri, E.*; Colonna, N.*; Cortes, G.*; Couture, A.*; Cox, J.*; Dahlfors, M.*; David, S.*; Dillmann, I.*; Dolfini, R.*; Domingo-Pardo, C.*; Dridi, W.*; Durn, I.*; Eleftheriadis, C.*; Embid-Segura, M.*; Ferrant, L.*; Ferrari, A.*; Ferreira-Marques, R.*; Fitzpatrick, L.*; Frais-Koelbl, H.*; Fujii, Kaori*; Furman, W.*; Gallino, R.*; Goncalves, I.*; Gonzalez-Romero, E.*; Goverdovski, A.*; Gramegna, F.*; Griesmayer, E.*; Guerrero, C.*; Gunsing, F.*; Haas, B.*; Haight, R.*; Heil, M.*; Herrera-Martinez, A.*; Igashira, Masayuki*; Isaev, S.*; Jericha, E.*; Kadi, Y.*; Kppeler, F.*; Karamanis, D.*; Karadimos, D.*; Kerveno, M.*; Ketlerov, V.*; Koehler, P.*; Konovalov, V.*; Kossionides, E.*; Krtika, M.*; Lamboudis, C.*; Leeb, H.*; Lindote, A.*; Lopes, I.*; Lozano, M.*; Lukic, S.*; Marganiec, J.*; Marques, L.*; Marrone, S.*; Mastinu, P.*; Mengoni, A.*; Milazzo, P. M.*; Moreau, C.*; Mosconi, M.*; Neves, F.*; Oberhummer, H.*; O'Brien, S.*; Oshima, Masumi; Pancin, J.*; Papachristodoulou, C.*; Papadopoulos, C.*; Paradela, C.*; Patronis, N.*; Pavlik, A.*; Pavlopoulos, P.*; Perrot, L.*; Plag, R.*; Plompen, A.*; Plukis, A.*; Poch, A.*; Pretel, C.*; Quesada, J.*; Rauscher, T.*; Reifarth, R.*; Rosetti, M.*; Rubbia, C.*; Rudolf, G.*; Rullhusen, P.*; Salgado, J.*; Sarchiapone, L.*; Savvidis, I.*; Stephan, C.*; Tagliente, G.*; Tain, J. L.*; Tassan-Got, L.*; Tavora, L.*; Vannini, G.*; Vaz, P.*; Ventura, A.*; Villamarin, D.*; Vincente, M. C.*; Vlachoudis, V.*; Vlastou, R.*; Voss, F.*; Walter, S.*; Wendler, H.*; Wiescher, M.*; Wisshak, K.*

CERNにおける飛行時間法実験施設n_TOFにおいてLaの中性子捕獲断面積を0.6eVから9keVのエネルギー領域で求めた。データは R-matrix法を用いて共鳴パラメータを求め、平均準位間隔を導いた。このデータからマックスウェル平均の中性子捕獲断面積を求め、過程の主成分に関する宇宙モデルで合成されるLaの存在比を求めることができた。

We measured the neutron capture cross section of La relative to Au in the energy range of 0.6 eV to 9 keV at n_TOF, the neutron time-of-flight facility at CERN. The data were fitted using R-matrix formalism to extract resonance parameters which were used to calculate average level spacings. The data were used to determine Maxwellian-averaged neutron capture cross sections which, in turn, were used to calculate the La abundance synthesized in a steller model of the main component of the process.