[en] Several ingenious solutions have been offered for the solar neutrino problem - a defect in the solar model, the appearance of a new type of neutrino physics, the sun is no longer burning, etc. The range of these proffered solutions stresses the need for a new experiment to study the sun. The modern pulsed laser now makes possible a new solar neutrino test which examines an independent neutrino source in the sun. A recently proposed experiment would use the reaction ⁸¹Br(nu,e^-)⁸¹Kr to measure the flux of ⁷Be neutrinos from the sun. When ⁷Be decays by electron capture to make ⁷Li, a neutrino is emitted at 0.862 MeV and the flux of these on the earth is about 4 x 10⁹ cm^-2 s^-1, according to the standard model. Therefore, an experiment based on ⁸¹Br(nu,e^-)⁸¹Kr which is sensitive to these lower energy neutrinos would be of fundamental importance. To first order, the chlorine experiment detects the ⁸B neutrinos while bromine detects the much more abundant ⁷Be neutrino source. In practice, the proposed bromine experiment would be very similar to the chlorine radiochemical experiment, except that ⁸¹Kr with a half-life of 2 x 10⁵ years cannot be counted by decay methods. With an experiment of about the same volume as the chlorine experiment (380 m³) filled with CH₂Br₂, the model predicts about 2 atoms of ⁸¹Kr per day. The bromine experiment depends entirely on the RIS method, implemented with pulsed lasers, for its success. 10 refs., 3 figs