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Abraham J, Abreu P, Aglietta M, et al. Measurement of the depth of maximum of extensive air showers above 10{18} eV. Phys Rev Lett. 2010;104(9):091101doi: 10.1103/PhysRevLett.104.091101.
Abraham, J., Abreu, P., Aglietta, M., Ahn, E. J., Allard, D., Allekotte, I., Allen, J., Alvarez-Muñiz, J., Ambrosio, M., Anchordoqui, L., Andringa, S., Anticić, T., Anzalone, A., Aramo, C., Arganda, E., Arisaka, K., Arqueros, F., Asorey, H., Assis, P., Aublin, J., Ave, M., Avila, G., Bäcker, T., Badagnani, D., Balzer, M., Barber, K. B., Barbosa, A. F., Barroso, S. L., Baughman, B., Bauleo, P., Beatty, J. J., Becker, B. R., Becker, K. H., Bellétoile, A., Bellido, J. A., Benzvi, S., Berat, C., Bergmann, T., Bertou, X., Biermann, P. L., Billoir, P., Blanch-Bigas, O., Blanco, F., Blanco, M., Bleve, C., Blümer, H., Bohácová, M., Boncioli, D., Bonifazi, C., Bonino, R., Borodai, N., Brack, J., Brogueira, P., Brown, W. C., Bruijn, R., Buchholz, P., Bueno, A., Burton, R. E., Busca, N. G., Caballero-Mora, K. S., Caramete, L., Caruso, R., Castellina, A., Catalano, O., Cataldi, G., Cazon, L., Cester, R., Chauvin, J., Chiavassa, A., Chinellato, J. A., Chou, A., Chudoba, J., Clay, R. W., Colombo, E., Coluccia, M. R., Conceição, R., Contreras, F., Cook, H., Cooper, M. J., Coppens, J., Cordier, A., Cotti, U., Coutu, S., Covault, C. E., Creusot, A., Criss, A., Cronin, J., Curutiu, A., Dagoret-Campagne, S., Dallier, R., Daumiller, K., Dawson, B. R., de Almeida, R. M., De Domenico, M., De Donato, C., de Jong, S. J., De La Vega, G., de Mello Junior, W. J., de Mello Neto, J. R., De Mitri, I., de Souza, V., de Vries, K. D., Decerprit, G., Del Peral, L., Deligny, O., Della Selva, A., Delle Fratte, C., Dembinski, H., Di Giulio, C., Diaz, J. C., Díaz Castro, M. L., Diep, P. N., Dobrigkeit, C., D'Olivo, J. C., Dong, P. N., Dorofeev, A., Dos Anjos, J. C., Dova, M. T., D'Urso, D., Dutan, I., Duvernois, M. A., Ebr, J., Engel, R., Erdmann, M., Escobar, C. O., Etchegoyen, A., Facal San Luis, P., Falcke, H., Farrar, G., Fauth, A. C., Fazzini, N., Ferrero, A., Fick, B., Filevich, A., Filipcic, A., Fleck, I., Fliescher, S., Fracchiolla, C. E., Fraenkel, E. D., Fröhlich, U., Fulgione, W., Gamarra, R. F., Gambetta, S., García, B., García Gámez, D., Garcia-Pinto, D., Garrido, X., Gelmini, G., Gemmeke, H., Ghia, P. L., Giaccari, U., Giller, M., Glass, H., Goggin, L. M., Gold, M. S., Golup, G., Gomez Albarracin, F., Gómez Berisso, M., Gonçalves, P., Gonzalez, D., Gonzalez, J. G., Góra, D., Gorgi, A., Gouffon, P., Gozzini, S. R., Grashorn, E., Grebe, S., Grigat, M., Grillo, A. F., Guardincerri, Y., Guarino, F., Guedes, G. P., Hague, J. D., Halenka, V., Hansen, P., Harari, D., Harmsma, S., Harton, J. L., Haungs, A., Hebbeker, T., Heck, D., Herve, A. E., Hojvat, C., Holmes, V. C., Homola, P., Hörandel, J. R., Horneffer, A., Hrabovský, M., Huege, T., Hussain, M., Iarlori, M., Insolia, A., Ionita, F., Italiano, A., Jiraskova, S., Kadija, K., Kaducak, M., Kampert, K. H., Karova, T., Kasper, P., Kégl, B., Keilhauer, B., Keivani, A., Kelley, J., Kemp, E., Kieckhafer, R. M., Klages, H. O., Kleifges, M., Kleinfeller, J., Knapik, R., Knapp, J., Koang, D. H., Krieger, A., Krömer, O., Kruppke-Hansen, D., Kuehn, F., Kuempel, D., Kulbartz, K., Kunka, N., Kusenko, A., La Rosa, G., Lachaud, C., Lago, B. L., Lautridou, P., Leão, M. S., Lebrun, D., Lebrun, P., Lee, J., Leigui de Oliveira, M. A., Lemiere, A., Letessier-Selvon, A., Lhenry-Yvon, I., López, R., Lopez Agüera, A., Louedec, K., Lozano Bahilo, J., Lucero, A., Ludwig, M., Lyberis, H., Maccarone, M. C., Macolino, C., Maldera, S., Mandat, D., Mantsch, P., Mariazzi, A. G., Marin, V., Maris, I. C., Marquez Falcon, H. R., Marsella, G., Martello, D., Martínez Bravo, O., Mathes, H. J., Matthews, J., Matthews, J. A., Matthiae, G., Maurizio, D., Mazur, P. O., McEwen, M., Medina-Tanco, G., Melissas, M., Melo, D., Menichetti, E., Menshikov, A., Meurer, C., Micanović, S., Micheletti, M. I., Miller, W., Miramonti, L., Mollerach, S., Monasor, M., Monnier Ragaigne, D., Montanet, F., Morales, B., Morello, C., Moreno, E., Moreno, J. C., Morris, C., Mostafá, M., Mueller, S., Muller, M. A., Mussa, R., Navarra, G., Navarro, J. L., Navas, S., Necesal, P., Nellen, L., Nhung, P. T., Nierstenhoefer, N., Nitz, D., Nosek, D., Nozka, L., Nyklicek, M., Oehlschläger, J., Olinto, A., Oliva, P., Olmos-Gilbaja, V. M., Ortiz, M., Pacheco, N., Pakk Selmi-Dei, D., Palatka, M., Pallotta, J., Palmieri, N., Parente, G., Parizot, E., Parlati, S., Parra, A., Parrisius, J., Parsons, R. D., Pastor, S., Paul, T., Pavlidou, V., Payet, K., Pech, M., Pekala, J., Pelayo, R., Pepe, I. M., Perrone, L., Pesce, R., Petermann, E., Petrera, S., Petrinca, P., Petrolini, A., Petrov, Y., Petrovic, J., Pfendner, C., Piegaia, R., Pierog, T., Pimenta, M., Pirronello, V., Platino, M., Ponce, V. H., Pontz, M., Privitera, P., Prouza, M., Quel, E. J., Rautenberg, J., Ravel, O., Ravignani, D., Redondo, A., Revenu, B., Rezende, F. A., Ridky, J., Riggi, S., Risse, M., Ristori, P., Rivière, C., Rizi, V., Robledo, C., Rodriguez, G., Rodriguez Martino, J., Rodriguez Rojo, J., Rodriguez-Cabo, I., Rodríguez-Frías, M. D., Ros, G., Rosado, J., Rossler, T., Roth, M., Rouillé-d'Orfeuil, B., Roulet, E., Rovero, A. C., Salamida, F., Salazar, H., Salina, G., Sánchez, F., Santander, M., Santo, C. E., Santos, E., Santos, E. M., Sarazin, F., Sarkar, S., Sato, R., Scharf, N., Scherini, V., Schieler, H., Schiffer, P., Schmidt, A., Schmidt, F., Schmidt, T., Scholten, O., Schoorlemmer, H., Schovancova, J., Schovánek, P., Schroeder, F., Schulte, S., Schüssler, F., Schuster, D., Sciutto, S. J., Scuderi, M., Segreto, A., Semikoz, D., Settimo, M., Shadkam, A., Shellard, R. C., Sidelnik, I., Siffert, B. B., Sigl, G., Smiałkowski, A., Smída, R., Snow, G. R., Sommers, P., Sorokin, J., Spinka, H., Squartini, R., Stasielak, J., Stephan, M., Strazzeri, E., Stutz, A., Suarez, F., Suomijärvi, T., Supanitsky, A. D., Susa, T., Sutherland, M. S., Swain, J., Szadkowski, Z., Tamashiro, A., Tamburro, A., Tapia, A., Tarutina, T., Taşcău, O., Tcaciuc, R., Tcherniakhovski, D., Tegolo, D., Thao, N. T., Thomas, D., Tiffenberg, J., Timmermans, C., Tkaczyk, W., Todero Peixoto, C. J., Tomé, B., Tonachini, A., Travnicek, P., Tridapalli, D. B., Tristram, G., Trovato, E., Tueros, M., Ulrich, R., Unger, M., Urban, M., Valdés Galicia, J. F., Valiño, I., Valore, L., van den Berg, A. M., Vázquez, J. R., Vázquez, R. A., Veberic, D., Venters, T., Verzi, V., Videla, M., Villaseñor, L., Vorobiov, S., Voyvodic, L., Wahlberg, H., Wahrlich, P., Wainberg, O., Warner, D., Watson, A. A., Westerhoff, S., Whelan, B. J., Wieczorek, G., Wiencke, L., Wilczyńska, B., Wilczyński, H., Williams, C., Winchen, T., Winnick, M. G., Wundheiler, B., Yamamoto, T., Younk, P., Yuan, G., Yushkov, A., Zas, E., Zavrtanik, D., Zavrtanik, M., Zaw, I., Zepeda, A., Ziolkowski, M. (2010). Measurement of the depth of maximum of extensive air showers above 10{18} eV. Physical review letters, 104(9), 091101. https://doi.org/10.1103/PhysRevLett.104.091101
Abraham, J, et al. "Measurement of the depth of maximum of extensive air showers above 10{18} eV." Physical review letters vol. 104,9 (2010): 091101. doi: https://doi.org/10.1103/PhysRevLett.104.091101
Abraham J, Abreu P, Aglietta M, Ahn EJ, Allard D, Allekotte I, Allen J, Alvarez-Muñiz J, Ambrosio M, Anchordoqui L, Andringa S, Anticić T, Anzalone A, Aramo C, Arganda E, Arisaka K, Arqueros F, Asorey H, Assis P, Aublin J, Ave M, Avila G, Bäcker T, Badagnani D, Balzer M, Barber KB, Barbosa AF, Barroso SL, Baughman B, Bauleo P, Beatty JJ, Becker BR, Becker KH, Bellétoile A, Bellido JA, Benzvi S, Berat C, Bergmann T, Bertou X, Biermann PL, Billoir P, Blanch-Bigas O, Blanco F, Blanco M, Bleve C, Blümer H, Bohácová M, Boncioli D, Bonifazi C, Bonino R, Borodai N, Brack J, Brogueira P, Brown WC, Bruijn R, Buchholz P, Bueno A, Burton RE, Busca NG, Caballero-Mora KS, Caramete L, Caruso R, Castellina A, Catalano O, Cataldi G, Cazon L, Cester R, Chauvin J, Chiavassa A, Chinellato JA, Chou A, Chudoba J, Clay RW, Colombo E, Coluccia MR, Conceição R, Contreras F, Cook H, Cooper MJ, Coppens J, Cordier A, Cotti U, Coutu S, Covault CE, Creusot A, Criss A, Cronin J, Curutiu A, Dagoret-Campagne S, Dallier R, Daumiller K, Dawson BR, de Almeida RM, De Domenico M, De Donato C, de Jong SJ, De La Vega G, de Mello Junior WJ, de Mello Neto JR, De Mitri I, de Souza V, de Vries KD, Decerprit G, Del Peral L, Deligny O, Della Selva A, Delle Fratte C, Dembinski H, Di Giulio C, Diaz JC, Díaz Castro ML, Diep PN, Dobrigkeit C, D'Olivo JC, Dong PN, Dorofeev A, Dos Anjos JC, Dova MT, D'Urso D, Dutan I, Duvernois MA, Ebr J, Engel R, Erdmann M, Escobar CO, Etchegoyen A, Facal San Luis P, Falcke H, Farrar G, Fauth AC, Fazzini N, Ferrero A, Fick B, Filevich A, Filipcic A, Fleck I, Fliescher S, Fracchiolla CE, Fraenkel ED, Fröhlich U, Fulgione W, Gamarra RF, Gambetta S, García B, García Gámez D, Garcia-Pinto D, Garrido X, Gelmini G, Gemmeke H, Ghia PL, Giaccari U, Giller M, Glass H, Goggin LM, Gold MS, Golup G, Gomez Albarracin F, Gómez Berisso M, Gonçalves P, Gonzalez D, Gonzalez JG, Góra D, Gorgi A, Gouffon P, Gozzini SR, Grashorn E, Grebe S, Grigat M, Grillo AF, Guardincerri Y, Guarino F, Guedes GP, Hague JD, Halenka V, Hansen P, Harari D, Harmsma S, Harton JL, Haungs A, Hebbeker T, Heck D, Herve AE, Hojvat C, Holmes VC, Homola P, Hörandel JR, Horneffer A, Hrabovský M, Huege T, Hussain M, Iarlori M, Insolia A, Ionita F, Italiano A, Jiraskova S, Kadija K, Kaducak M, Kampert KH, Karova T, Kasper P, Kégl B, Keilhauer B, Keivani A, Kelley J, Kemp E, Kieckhafer RM, Klages HO, Kleifges M, Kleinfeller J, Knapik R, Knapp J, Koang DH, Krieger A, Krömer O, Kruppke-Hansen D, Kuehn F, Kuempel D, Kulbartz K, Kunka N, Kusenko A, La Rosa G, Lachaud C, Lago BL, Lautridou P, Leão MS, Lebrun D, Lebrun P, Lee J, Leigui de Oliveira MA, Lemiere A, Letessier-Selvon A, Lhenry-Yvon I, López R, Lopez Agüera A, Louedec K, Lozano Bahilo J, Lucero A, Ludwig M, Lyberis H, Maccarone MC, Macolino C, Maldera S, Mandat D, Mantsch P, Mariazzi AG, Marin V, Maris IC, Marquez Falcon HR, Marsella G, Martello D, Martínez Bravo O, Mathes HJ, Matthews J, Matthews JA, Matthiae G, Maurizio D, Mazur PO, McEwen M, Medina-Tanco G, Melissas M, Melo D, Menichetti E, Menshikov A, Meurer C, Micanović S, Micheletti MI, Miller W, Miramonti L, Mollerach S, Monasor M, Monnier Ragaigne D, Montanet F, Morales B, Morello C, Moreno E, Moreno JC, Morris C, Mostafá M, Mueller S, Muller MA, Mussa R, Navarra G, Navarro JL, Navas S, Necesal P, Nellen L, Nhung PT, Nierstenhoefer N, Nitz D, Nosek D, Nozka L, Nyklicek M, Oehlschläger J, Olinto A, Oliva P, Olmos-Gilbaja VM, Ortiz M, Pacheco N, Pakk Selmi-Dei D, Palatka M, Pallotta J, Palmieri N, Parente G, Parizot E, Parlati S, Parra A, Parrisius J, Parsons RD, Pastor S, Paul T, Pavlidou V, Payet K, Pech M, Pekala J, Pelayo R, Pepe IM, Perrone L, Pesce R, Petermann E, Petrera S, Petrinca P, Petrolini A, Petrov Y, Petrovic J, Pfendner C, Piegaia R, Pierog T, Pimenta M, Pirronello V, Platino M, Ponce VH, Pontz M, Privitera P, Prouza M, Quel EJ, Rautenberg J, Ravel O, Ravignani D, Redondo A, Revenu B, Rezende FA, Ridky J, Riggi S, Risse M, Ristori P, Rivière C, Rizi V, Robledo C, Rodriguez G, Rodriguez Martino J, Rodriguez Rojo J, Rodriguez-Cabo I, Rodríguez-Frías MD, Ros G, Rosado J, Rossler T, Roth M, Rouillé-d'Orfeuil B, Roulet E, Rovero AC, Salamida F, Salazar H, Salina G, Sánchez F, Santander M, Santo CE, Santos E, Santos EM, Sarazin F, Sarkar S, Sato R, Scharf N, Scherini V, Schieler H, Schiffer P, Schmidt A, Schmidt F, Schmidt T, Scholten O, Schoorlemmer H, Schovancova J, Schovánek P, Schroeder F, Schulte S, Schüssler F, Schuster D, Sciutto SJ, Scuderi M, Segreto A, Semikoz D, Settimo M, Shadkam A, Shellard RC, Sidelnik I, Siffert BB, Sigl G, Smiałkowski A, Smída R, Snow GR, Sommers P, Sorokin J, Spinka H, Squartini R, Stasielak J, Stephan M, Strazzeri E, Stutz A, Suarez F, Suomijärvi T, Supanitsky AD, Susa T, Sutherland MS, Swain J, Szadkowski Z, Tamashiro A, Tamburro A, Tapia A, Tarutina T, Taşcău O, Tcaciuc R, Tcherniakhovski D, Tegolo D, Thao NT, Thomas D, Tiffenberg J, Timmermans C, Tkaczyk W, Todero Peixoto CJ, Tomé B, Tonachini A, Travnicek P, Tridapalli DB, Tristram G, Trovato E, Tueros M, Ulrich R, Unger M, Urban M, Valdés Galicia JF, Valiño I, Valore L, van den Berg AM, Vázquez JR, Vázquez RA, Veberic D, Venters T, Verzi V, Videla M, Villaseñor L, Vorobiov S, Voyvodic L, Wahlberg H, Wahrlich P, Wainberg O, Warner D, Watson AA, Westerhoff S, Whelan BJ, Wieczorek G, Wiencke L, Wilczyńska B, Wilczyński H, Williams C, Winchen T, Winnick MG, Wundheiler B, Yamamoto T, Younk P, Yuan G, Yushkov A, Zas E, Zavrtanik D, Zavrtanik M, Zaw I, Zepeda A, Ziolkowski M. Measurement of the depth of maximum of extensive air showers above 10{18} eV. Phys Rev Lett. 2010 Mar 05;104(9):091101. doi: 10.1103/PhysRevLett.104.091101. Epub 2010 Mar 01. PMID: 20366976.
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Phys Rev Lett. 2010 Mar 05;104(9):091101. doi: 10.1103/PhysRevLett.104.091101. Epub 2010 Mar 01.

Measurement of the depth of maximum of extensive air showers above 10{18} eV.

Physical review letters

J Abraham, P Abreu, M Aglietta, E J Ahn, D Allard, I Allekotte, J Allen, J Alvarez-Muñiz, M Ambrosio, L Anchordoqui, S Andringa, T Anticić, A Anzalone, C Aramo, E Arganda, K Arisaka, F Arqueros, H Asorey, P Assis, J Aublin, M Ave, G Avila, T Bäcker, D Badagnani, M Balzer, K B Barber, A F Barbosa, S L C Barroso, B Baughman, P Bauleo, J J Beatty, B R Becker, K H Becker, A Bellétoile, J A Bellido, S Benzvi, C Berat, T Bergmann, X Bertou, P L Biermann, P Billoir, O Blanch-Bigas, F Blanco, M Blanco, C Bleve, H Blümer, M Bohácová, D Boncioli, C Bonifazi, R Bonino, N Borodai, J Brack, P Brogueira, W C Brown, R Bruijn, P Buchholz, A Bueno, R E Burton, N G Busca, K S Caballero-Mora, L Caramete, R Caruso, A Castellina, O Catalano, G Cataldi, L Cazon, R Cester, J Chauvin, A Chiavassa, J A Chinellato, A Chou, J Chudoba, R W Clay, E Colombo, M R Coluccia, R Conceição, F Contreras, H Cook, M J Cooper, J Coppens, A Cordier, U Cotti, S Coutu, C E Covault, A Creusot, A Criss, J Cronin, A Curutiu, S Dagoret-Campagne, R Dallier, K Daumiller, B R Dawson, R M de Almeida, M De Domenico, C De Donato, S J de Jong, G De La Vega, W J M de Mello Junior, J R T de Mello Neto, I De Mitri, V de Souza, K D de Vries, G Decerprit, L Del Peral, O Deligny, A Della Selva, C Delle Fratte, H Dembinski, C Di Giulio, J C Diaz, M L Díaz Castro, P N Diep, C Dobrigkeit, J C D'Olivo, P N Dong, A Dorofeev, J C Dos Anjos, M T Dova, D D'Urso, I Dutan, M A Duvernois, J Ebr, R Engel, M Erdmann, C O Escobar, A Etchegoyen, P Facal San Luis, H Falcke, G Farrar, A C Fauth, N Fazzini, A Ferrero, B Fick, A Filevich, A Filipcic, I Fleck, S Fliescher, C E Fracchiolla, E D Fraenkel, U Fröhlich, W Fulgione, R F Gamarra, S Gambetta, B García, D García Gámez, D Garcia-Pinto, X Garrido, G Gelmini, H Gemmeke, P L Ghia, U Giaccari, M Giller, H Glass, L M Goggin, M S Gold, G Golup, F Gomez Albarracin, M Gómez Berisso, P Gonçalves, D Gonzalez, J G Gonzalez, D Góra, A Gorgi, P Gouffon, S R Gozzini, E Grashorn, S Grebe, M Grigat, A F Grillo, Y Guardincerri, F Guarino, G P Guedes, J D Hague, V Halenka, P Hansen, D Harari, S Harmsma, J L Harton, A Haungs, T Hebbeker, D Heck, A E Herve, C Hojvat, V C Holmes, P Homola, J R Hörandel, A Horneffer, M Hrabovský, T Huege, M Hussain, M Iarlori, A Insolia, F Ionita, A Italiano, S Jiraskova, K Kadija, M Kaducak, K H Kampert, T Karova, P Kasper, B Kégl, B Keilhauer, A Keivani, J Kelley, E Kemp, R M Kieckhafer, H O Klages, M Kleifges, J Kleinfeller, R Knapik, J Knapp, D-H Koang, A Krieger, O Krömer, D Kruppke-Hansen, F Kuehn, D Kuempel, K Kulbartz, N Kunka, A Kusenko, G La Rosa, C Lachaud, B L Lago, P Lautridou, M S A B Leão, D Lebrun, P Lebrun, J Lee, M A Leigui de Oliveira, A Lemiere, A Letessier-Selvon, I Lhenry-Yvon, R López, A Lopez Agüera, K Louedec, J Lozano Bahilo, A Lucero, M Ludwig, H Lyberis, M C Maccarone, C Macolino, S Maldera, D Mandat, P Mantsch, A G Mariazzi, V Marin, I C Maris, H R Marquez Falcon, G Marsella, D Martello, O Martínez Bravo, H J Mathes, J Matthews, J A J Matthews, G Matthiae, D Maurizio, P O Mazur, M McEwen, G Medina-Tanco, M Melissas, D Melo, E Menichetti, A Menshikov, C Meurer, S Micanović, M I Micheletti, W Miller, L Miramonti, S Mollerach, M Monasor, D Monnier Ragaigne, F Montanet, B Morales, C Morello, E Moreno, J C Moreno, C Morris, M Mostafá, S Mueller, M A Muller, R Mussa, G Navarra, J L Navarro, S Navas, P Necesal, L Nellen, P T Nhung, N Nierstenhoefer, D Nitz, D Nosek, L Nozka, M Nyklicek, J Oehlschläger, A Olinto, P Oliva, V M Olmos-Gilbaja, M Ortiz, N Pacheco, D Pakk Selmi-Dei, M Palatka, J Pallotta, N Palmieri, G Parente, E Parizot, S Parlati, A Parra, J Parrisius, R D Parsons, S Pastor, T Paul, V Pavlidou, K Payet, M Pech, J Pekala, R Pelayo, I M Pepe, L Perrone, R Pesce, E Petermann, S Petrera, P Petrinca, A Petrolini, Y Petrov, J Petrovic, C Pfendner, R Piegaia, T Pierog, M Pimenta, V Pirronello, M Platino, V H Ponce, M Pontz, P Privitera, M Prouza, E J Quel, J Rautenberg, O Ravel, D Ravignani, A Redondo, B Revenu, F A S Rezende, J Ridky, S Riggi, M Risse, P Ristori, C Rivière, V Rizi, C Robledo, G Rodriguez, J Rodriguez Martino, J Rodriguez Rojo, I Rodriguez-Cabo, M D Rodríguez-Frías, G Ros, J Rosado, T Rossler, M Roth, B Rouillé-d'Orfeuil, E Roulet, A C Rovero, F Salamida, H Salazar, G Salina, F Sánchez, M Santander, C E Santo, E Santos, E M Santos, F Sarazin, S Sarkar, R Sato, N Scharf, V Scherini, H Schieler, P Schiffer, A Schmidt, F Schmidt, T Schmidt, O Scholten, H Schoorlemmer, J Schovancova, P Schovánek, F Schroeder, S Schulte, F Schüssler, D Schuster, S J Sciutto, M Scuderi, A Segreto, D Semikoz, M Settimo, A Shadkam, R C Shellard, I Sidelnik, B B Siffert, G Sigl, A Smiałkowski, R Smída, G R Snow, P Sommers, J Sorokin, H Spinka, R Squartini, J Stasielak, M Stephan, E Strazzeri, A Stutz, F Suarez, T Suomijärvi, A D Supanitsky, T Susa, M S Sutherland, J Swain, Z Szadkowski, A Tamashiro, A Tamburro, A Tapia, T Tarutina, O Taşcău, R Tcaciuc, D Tcherniakhovski, D Tegolo, N T Thao, D Thomas, J Tiffenberg, C Timmermans, W Tkaczyk, C J Todero Peixoto, B Tomé, A Tonachini, P Travnicek, D B Tridapalli, G Tristram, E Trovato, M Tueros, R Ulrich, M Unger, M Urban, J F Valdés Galicia, I Valiño, L Valore, A M van den Berg, J R Vázquez, R A Vázquez, D Veberic, T Venters, V Verzi, M Videla, L Villaseñor, S Vorobiov, L Voyvodic, H Wahlberg, P Wahrlich, O Wainberg, D Warner, A A Watson, S Westerhoff, B J Whelan, G Wieczorek, L Wiencke, B Wilczyńska, H Wilczyński, C Williams, T Winchen, M G Winnick, B Wundheiler, T Yamamoto, P Younk, G Yuan, A Yushkov, E Zas, D Zavrtanik, M Zavrtanik, I Zaw, A Zepeda, M Ziolkowski,

Affiliations

  1. National Technological University, Faculty Mendoza (CONICET/CNEA), Mendoza, Argentina.

PMID: 20366976 DOI: 10.1103/PhysRevLett.104.091101

Abstract

We describe the measurement of the depth of maximum, X{max}, of the longitudinal development of air showers induced by cosmic rays. Almost 4000 events above 10;{18} eV observed by the fluorescence detector of the Pierre Auger Observatory in coincidence with at least one surface detector station are selected for the analysis. The average shower maximum was found to evolve with energy at a rate of (106{-21}{+35}) g/cm{2}/decade below 10{18.24+/-0.05} eV, and (24+/-3) g/cm{2}/decade above this energy. The measured shower-to-shower fluctuations decrease from about 55 to 26 g/cm{2}. The interpretation of these results in terms of the cosmic ray mass composition is briefly discussed.

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