Pages That Need Review
Research Notes I, 1949
4
Isotope | Percent Abundance | Spin | Magnetic Moment |
---|---|---|---|
47Ag107 |
| 1/2 | - 0.10 |
47Ag109 | 48.1 | 1/2 | - 0.19 |
[checkmark] 48Cd111 | 13.0 | 1/2 |
|
[checkmark] 48Cd113 | 12.3 | 1/2 |
|
[checkmark] 50Sn115 | 0.4 | 1/2 |
|
49In113 | 4.5 | 9/2 | 5.52 |
49In115 | 95.5 | 9/2 | 5.52 |
51Sb121 | 56 | 5/2 | 3.7 |
51Sb123 | 44 | 7/2 | 2.8 |
(Known) 57La139 | 100 | 7/2 | 2.76 |
para [left arrow] 59Pr141 | 100 | 5/2 |
9
Compare two signals in the same magnetic field:
signal height recorded by the milliammeter
= C[j(j+1)γ^4 / (width)^2] (Molarity) (percent Abundance)
For Cd μCd = 0.65 j=1/2 NaCl 5.5 M
Na μNa = 2.215 j=3/2 CdCl2 2 [M]
(Signal/noise) ratio for Na observed in scope ~ [1₀?]
(Signal/noise) ratio for Cd recorded in meter ~0.0565 x 200 = 11.3 assuming 200 times enhanced.
10
August 6, 1949
Test of the size of the signal of na in 0.428 M NaCl soln plus 0.8 M MnSO₄. Hs = 0.8 gauss, Gain - 56, sweep freq = 91cps φ = 100
No. of cells in the β-supply of oscillator | H₁ | Signal Ht | width |
---|---|---|---|
1 | 86, 82, | 2 mm | |
1 1/2 | 30 | " | |
2 | 5 | " |
Using 0.2 M NaCl without adding Mn [bit?], under the same conditions as above (Hs = 0.8 gauss, gain - 56, H₁ corresponds to one cell) signal Ht = 4.5, 5.0, 4.5 width = (2mm)-
[Break]
Test: 0.1 M soln of NaCl was prepared by adding 0.2 M MnSO₄.
13
[unclear], The dipole broadening of magnetic [reson] [unclear] (Phys. Rev. 74, 1168, '48) G [unclear], line shapes in nucleus parame 4, '48) Shape fu g(v) [illegible equation] T2 = 1/2 {g(v)} max
14
August 12, '49
Resonance of the two cadmium isotopes 11, 113 observed & confirmed at 6.17 MC & 5.90 MC for a magnetic field 6600 gauss
RESONANCE FREQUENCIES
Cd A (Marker 6200 KC --> 6175 KC)
Time | Marker Dist. | Res. Dist. | Marker | Res. Freq. | (Δf)² | |
---|---|---|---|---|---|---|
3 | 57.5 (6175 --> 6150) | 3.9 | 1 | 6173.4 KC | ||
183 | 116.1 (6200 --> 6150) | 51.2 | 1 | 6178.0 | 0 | 0 |
252 | 59.3 | 52.3 | 1 | 6178.1 | 0.1 | 0.01 |
299 | 59.1 | 51.9 | 1 | 6178.2 | 0.2 | 0.04 |
348 | 60.6 | 54.0 | 1 | 6177.9 | -0.1 | 0.01 |
15
Cd B (5925 --> 5900 KC)
Time | Marker Dist. | Res. Dist. | Marker | Res Freq | (Δf)² | |
---|---|---|---|---|---|---|
45 | 60.7 | 51.0 | 2 | 5903.9 KC | ||
212 | 60.1 | 46.4 | 1 | 5905.8 | -0.2 | 0.04 |
267 | 61.7 | 46.8 | 2 | 5905.9 | -0.1 | 0.01 |
315 | 61.8 | 45.9 | 1 | 5906.5 | 0.5 | 0.25 |
362 | 62.1 | 47.3 | 2 | 5905.9 | -0.1 | 0.01 |
Na (6375 --> 6350 KC)
Time | Marker Dist. | Res Dist. | Marker | Res Freq | {{tex: $\Delta f = f - \Bar{f}$ :tex}} | (Δf)² |
---|---|---|---|---|---|---|
121 | 56.6 | 17.2 | 2 | 7367.3 KC | -0.3 | 0.09 |
228 | 58.0 | 17.1 | 1 | 7367.7 | 0.1 | 0.01 |
277 | 57.9 | 17.4 | 1 | 7367.6 | 0 | 0 |
326 | 57.2 | 15.8 | 2 | 7368.0 | 0.4 | 0.16 |
382 | 60.4 | 18.7 | 2 | 7367.2 | -0.4 | 0.16 |