Eur. Phys. J. C 25, 67-75 (2002)
Optical background measurement in a potential site for the NEMO KM 3 undersea neutrino telescopeF. Ameli1, 2, M. Bonori1, 2 and F. Massa1
1 Istituto Nazionale di Fisica Nucleare, Sezione di "Roma 1", 00133 Roma, Italy
2 Università di Roma "La Sapienza", Dipartimento di Fisica, 00185 Roma, Italy
(Received: 20 April 2002 / Published online: 26 July 2002 )
We describe the measurement of the deep sea optical background in some sites south of Capo Passero, Sicily. A continuous flux of about 440 photons cm-2 s-1 in the wavelength interval 440-550 nm is estimated due to the decays of the 40K contained in the sea water. Bioluminescence light bursts are also observed and an example of time evolution is reported. All the measurements were accomplished using a deep sea module also described in this article.
© Società Italiana di Fisica, Springer-Verlag 2002