The 31S0-33P0 transition in the aluminum isotope ion 26A1+: a potentially superior passive laser frequency standard and spectrum analyzer.

摘要: Abstract The aluminum 26 isotope ion is proposed here as a possible candidate for superior atomic clock. For this even isotope, the extraordinarily long lifetime of 33P0 state offers potential clock transition (31S0-33P0) linewidth 300 microHz. mF = 0 --> has only quadratic Zeeman shift approximately 4 x 10(-18) at 0.1 Gauss magnetic field, compared to 10(-8) hydrogen maser. Electronic quadrupole moments vanish both J and J' states with them shifts due electric field gradients. All have been estimated are orders magnitude less than Hg+ Ba+, which being studied elements.