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In the same article which describes the accurate measurement of the Hydrogen 1s-2s transition at:
2 466 061 413 187 035 (10) Hz,
CG Parthey also measures the frequency difference between Hydrogen and Deuterium which he gives as:
670 994 334 606(15) Hz.
Assuming that the transition frequencies for Hydrogen and Deuterium are in the ratio of their reduced masses, I determine the atomic mass of Deuterium according to the following formula.
[itex]\large \frac{m_e\left(1+\frac{\Delta f}{f_h}\right)}{\frac{m_e}{m_p}-\frac{\Delta f}{f_h}} [/itex]
The result is 3.3434891661E-27 as compared to the Codata value 3.3435834800E-27
Given the levels of accuracy in Parthey's measurements, there seems to be some discrepancy between the calculated result and the Codata value.
Am I perhaps making an incorrect assumption or am using an incorrect formula ? If not what might be an explanation for this discrepancy ?
2 466 061 413 187 035 (10) Hz,
CG Parthey also measures the frequency difference between Hydrogen and Deuterium which he gives as:
670 994 334 606(15) Hz.
Assuming that the transition frequencies for Hydrogen and Deuterium are in the ratio of their reduced masses, I determine the atomic mass of Deuterium according to the following formula.
[itex]\large \frac{m_e\left(1+\frac{\Delta f}{f_h}\right)}{\frac{m_e}{m_p}-\frac{\Delta f}{f_h}} [/itex]
The result is 3.3434891661E-27 as compared to the Codata value 3.3435834800E-27
Given the levels of accuracy in Parthey's measurements, there seems to be some discrepancy between the calculated result and the Codata value.
Am I perhaps making an incorrect assumption or am using an incorrect formula ? If not what might be an explanation for this discrepancy ?