Solar neutrinos observed by GALLEX at Gran Sasso. Anselmann, P., Hampel, W., Heusser, G., Kiko, J., Kirsten, T., Pernicka, E., Plaga, R., Rönn, U., Sann, M., Schlosser, C., Wink, R., Wójcik, M., von Ammon, R., Ebert, K., Fritsch, T., Hellriegel, K., Henrich, E., Stieglitz, L., Weyrich, F., Balata, M., Bellotti, E., Ferrari, N., Lalla, H., Stolarczyk, T., Cattadori, C., Cremonesi, O., Fiorini, E., Pezzoni, S., Zanotti, L., von Feilitzsch, F., Mößbauer, R., Schanda, U., Berthomieu, G., Schatzman, E., Carmi, I., Dostrovsky, I., Bacci, C., Belli, P., Bernabei, R., D'Angelo, S., Paoluzi, L., Charbit, S., Cribier, M., Dupont, G., Gosset, L., Rich, J., Spiro, M., Tao, C., Vignaud, D., Hahn, R., Hartmann, F., Rowley, J., Stoenner, R., & Weneser, J. Physics Letters B, 285(4):376–389, July, 1992. Publisher: North-Holland
Solar neutrinos observed by GALLEX at Gran Sasso [link]Paper  doi  abstract   bibtex   
We have measured the rate of production of 71Ge from 71Ga by solar neutrinos. The target consists of 30.3 t of gallium in the form of 8.13 M aqueous gallium chloride solution (101 t), shielded by ≈ 3300 m water equivalent of standard rock in the Gran Sasso Underground Laboratory (Italy). In nearly one year of operation, 14 measurements of the production rate of 71Ge were carried out to give, after corrections for side reactions and other backgrounds, an average value of 83 + 19 (stat.) ± 8 (syst.) SNU (1σ) due to solar neutrinos. This conclusion constitutes the first observation of solar pp neutrinos. Our result is consistent with the presence of the full pp neutrino flux expected according to the “standard solar model” together with a reduced flux of 8B + 7Be neutrinos as observed in the Homestake and Kamiokande experiments. Astrophysical reasons remain as a possible explanation of the solar neutrino problem. On the other hand, if the result is to be interpreted in terms of the MSW effect, it would fix neutrino masses and mixing angles within a very restricted range.
@article{anselmann_solar_1992,
	title = {Solar neutrinos observed by {GALLEX} at {Gran} {Sasso}},
	volume = {285},
	url = {https://www.sciencedirect.com/science/article/pii/037026939291521A},
	doi = {10.1016/0370-2693(92)91521-A},
	abstract = {We have measured the rate of production of 71Ge from 71Ga by solar neutrinos. The target consists of 30.3 t of gallium in the form of 8.13 M aqueous gallium chloride solution (101 t), shielded by ≈ 3300 m water equivalent of standard rock in the Gran Sasso Underground Laboratory (Italy). In nearly one year of operation, 14 measurements of the production rate of 71Ge were carried out to give, after corrections for side reactions and other backgrounds, an average value of 83 + 19 (stat.) ± 8 (syst.) SNU (1σ) due to solar neutrinos. This conclusion constitutes the first observation of solar pp neutrinos. Our result is consistent with the presence of the full pp neutrino flux expected according to the “standard solar model” together with a reduced flux of 8B + 7Be neutrinos as observed in the Homestake and Kamiokande experiments. Astrophysical reasons remain as a possible explanation of the solar neutrino problem. On the other hand, if the result is to be interpreted in terms of the MSW effect, it would fix neutrino masses and mixing angles within a very restricted range.},
	number = {4},
	journal = {Physics Letters B},
	author = {Anselmann, P. and Hampel, W. and Heusser, G. and Kiko, J. and Kirsten, T. and Pernicka, E. and Plaga, R. and Rönn, U. and Sann, M. and Schlosser, C. and Wink, R. and Wójcik, M. and von Ammon, R. and Ebert, K.H. and Fritsch, T. and Hellriegel, K. and Henrich, E. and Stieglitz, L. and Weyrich, F. and Balata, M. and Bellotti, E. and Ferrari, N. and Lalla, H. and Stolarczyk, T. and Cattadori, C. and Cremonesi, O. and Fiorini, E. and Pezzoni, S. and Zanotti, L. and von Feilitzsch, F. and Mößbauer, R. and Schanda, U. and Berthomieu, G. and Schatzman, E. and Carmi, I. and Dostrovsky, I. and Bacci, C. and Belli, P. and Bernabei, R. and D'Angelo, S. and Paoluzi, L. and Charbit, S. and Cribier, M. and Dupont, G. and Gosset, L. and Rich, J. and Spiro, M. and Tao, C. and Vignaud, D. and Hahn, R.L. and Hartmann, F.X. and Rowley, J.K. and Stoenner, R.W. and Weneser, J.},
	month = jul,
	year = {1992},
	note = {Publisher: North-Holland},
	pages = {376--389},
}

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