Measurement of the 14C abundance in a low-background liquid scintillator

被引：110

作者：

Alimonti, G ^{[1
]}

Angloher, G

Arpesella, C

Balata, M

Bellini, G

Benziger, J

Bonetti, S

Cadonati, L

Calaprice, FP

Cecchet, G

Chen, M

Darnton, N

de Bari, A

Deutsch, M

Elisei, F

von Feilitzsch, F

Galbiati, C

Gatti, F

Giammarchi, MG

Giugni, D

Goldbrunner, T

Golubchikov, A

Goretti, A

Hagner, T

Hartmann, FX

von Hentig, R

Heusser, G

Ianni, A

Jochum, J

Johnson, M

Laubenstein, M

Lombardi, P

Magni, S

Malvezzi, S

Manno, I

Manuzio, G

Masetti, F

Mazzucato, U

Meroni, E

Neff, M

Nostro, A

Oberauer, L

Perotti, A

Preda, A

Raghavan, RS

Ranucci, G

Resconi, E

Ruscitti, M

Scardaoni, R

Schonert, S

机构：

[1] Lab Nazl del Gran Sasso, Assergi, Aq, Italy

[2] MIT, Cambridge, MA 02139 USA

[3] Joint Inst Nucl Res, Dubna, Russia

[4] Tech Univ Munich, D-8046 Garching, Germany

[5] Univ Genoa, Dept Phys, Genova, Italy

[6] Ist Nazl Fis Nucl, I-16146 Genova, Italy

[7] Max Planck Inst, Heidelberg, Germany

[8] Univ Milan, Dept Phys, Milano, Italy

[9] Ist Nazl Fis Nucl, I-20133 Milano, Italy

[10] AT&T Bell Labs, Murray Hill, NJ 07974 USA

[11] Univ Pavia, Dept Phys, I-27100 Pavia, Italy

[12] Ist Nazl Fis Nucl, I-27100 Pavia, Italy

[13] Univ Perugia, Dept Phys, I-06100 Perugia, Italy

[14] Ist Nazl Fis Nucl, I-06100 Perugia, Italy

[15] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

[16] Princeton Univ, Dept Chem Engn, Princeton, NJ 08544 USA

来源：

PHYSICS LETTERS B | 1998年 / 422卷 / 1-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0370-2693(97)01565-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The C-14/C-12 ratio in 4.8 m(3) of high-purity liquid scintillator was measured at (1.94 +/- 0.09) x 10(-18), the lowest C-14 abundance ever measured. At this level the spectroscopy of low-energy solar neutrinos, in particular a measurement of the Be-7 neutrino flux, will not be obstructed by the C-14 beta decay intrinsic to a liquid scintillator detector. A comprehensive study of the deviation of the shape of the C-14 beta spectrum from the allowed statistical shape reveals consistent results with recent observations and calculations. Possible origins of the C-14 in the liquid scintillator are discussed. (C) 1998 Elsevier Science B.V.

引用

页码：349 / 358

页数：10

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