Preliminary Report on the Atomic Masses of H, D and 35Cl

抄録

In order to increase the measurement accuracy of the doublet mass differences, the digital readout method using a400-channel pulse height analyzer as a memory scope was adopted and the six methods finding out the mismatching degree of the doublet mass peaks displayed step-wise function f(X)channel number X were investigated. The true matching points obtained from six one seem to be good agreement compared to their associated errors. Under the condition of tbe half-height resolution of250, 000-500, 000, the mass differences of H35Cl-C3, H35Cl-C2D6and C3-C2D6doublets were measured. The results areΔM(H35Cl-C3)=23, 321.83±0.63ΔM(H35Cl-C2D6)=107, 934.90±0.54ΔM(C3-C2D6)=84, 611.60±0.34Combining those results and previously measured CO-N2, CO-C2H4andC2H4-C2D2mass differences the atomic masses of following ones are preliminary determined. D=2, 014, 101.933±0.057H=1, 007, 825.005±0.049 35Cl=34, 968, 851.70±0.64fromC2D6-H35ClandC2D6-C3or=34, 968, 853.17±0.64from H35Cl-C3 O=15, 994, 913.99±0.30N=14, 003, 073.78±0.14