Engineering topics
Publications and source records attributed to Kleppner, D..
The hyperfine frequency and wall shift of hydrogen atoms at 4.2 K stored in a bulb coated with solid H2 were measured. The phase shift per wall collision is -0.29(1) rad. The adsorption energy of H on H2 is 9(2) K, and the adsorption time at 4.2 K is approximately 30 nsec. Transverse and longitudinal relaxation times have been measured, and atomic densities greater than 10 to the 14th/cu cm have been observed.
Orbiting clock experiment for measuring gravitational red shift of earth by comparing ground based and satellite-borne hydrogen maser clocks
Atomic resonance and scattering - magnetic moment of proton and spin-exchange scattering
Direct frequency comparison of atomic hydrogen masers in different places and conditions by simultaneous monitoring of Loran C signals
Hydrogen maser construction and operation design principles emphasizing microwave cavity, low magnetic field, hydrogen storage and maser tuning techniques