Abstract
It is argued that conservation of energy, momentum, and spin, and QM transition probabilities, allow the generation and detection of low-energy (eV) neutrinos and antineutrinos in intra-atomic (non-nuclear) laser transitions. Two-quantum transitions between an upper and lower excited state in a lasing medium can support paired emissions of a neutrino and a recoiling counter-propagating anti-neutrino, each carrying half of the lasing transition energy. Their propagations are in opposite directions along the same axis as that of the intracavity laser beam in the lasing medium. Estimates show that the probability of this two-quantum event is on the order of 10−7 compared to a one-quantum stimulated emission of a laser photon. Absorptions or emissions of single antineutrinos or neutrinos by molecular/atomic matter are impossible because they carry spins s = ±h/2 which violates Δs = ±nh (n = integer) required for such processes. However, inside a laser, emissions of photons from excited states can be stimulated by neutrinos or anti-neutrinos passing through, provided their undulation frequency is resonant with the transition frequency. This is because in stimulated emissions, neutrinos or antineutrinos are not absorbed, and spin conservation violation is not an issue. Thus, detection of the passage of a laser-generated antineutrino or neutrino beam through a second “receiver” laser is possible provided that the transition energy in the second laser equals half the transition energy of the laser that emits the antineutrino-neutrino beam to be detected.
Highlights
In the 1930s, to explain intra-nuclear beta-decays, Enrico Fermi postulated the existence of a -unobservable neutrino to accommodate spin, energy, and momentum conservation of the emitted betas (=MeV electrons)
It is argued that conservation of energy, momentum, and spin, and QM transition probabilities, allow the generation and detection of low-energy neutrinos and antineutrinos in intra-atomic laser transitions
Inside a laser, emissions of photons from excited states can be stimulated by neutrinos or anti-neutrinos passing through, provided their undulation frequency is resonant with the transition frequency
Summary
In the 1930s, to explain intra-nuclear beta-decays, Enrico Fermi postulated the existence of a -unobservable neutrino to accommodate spin, energy, and momentum conservation of the emitted betas (=MeV electrons). It was realized that a connection with the old neutrino theory of photons [2] [3] was unnecessary, and a successful demonstration was more likely if the detection laser was operating at a laser wavelength twice that of the emitter. This latter conclusion followed from a more thorough review of second-order two-quantum atomic transition elements and resonant maxima, in addition to careful observance of conservation laws (momentum, energy, and spin)
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