Fu Chun Yu Lab Notebooks

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Research Notes I, 1949

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Nuclear pairs differing by neutrons or protons

Isotope Percent Abundance Spin Magnetic Moment

Last edit over 5 years ago by dml2018
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Isotope Percent Abundance Spin Magnetic Moment
47Ag107 48.1 51.9 1/2 - 0.10
47Ag109 48.1 1/2 - 0.19
[checkmark] 48Cd111 13.0 1/2 - 0.65 - 0.595
[checkmark] 48Cd113 12.3 1/2 - 0.65 - 0.623
[checkmark] 50Sn115 0.4 1/2 - 0.90 - 0.918
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
Last edit almost 3 years ago by awhtou
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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.

Last edit almost 4 years ago by awhtou
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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 "
[Break]

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.

Last edit almost 4 years ago by awhtou
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August 8, 1949

[columns] Search for Cd resonance

CdI2 2.8 M MnSO4 0.5 M

Assume μ = 0.7 - 0.6

H0 = 6600 gausses

fcd = [box around]7.02 MC - 6.02 MC[end box]

fp = 28 MC

[newcol] 11Na23 3/2

μ = 2.2149 ± 0.0002

fNa = at 6600 gauss = 7.39 MC [/columns]

Last edit almost 4 years ago by awhtou
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[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

Last edit about 3 years ago by oboewankenobi
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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
Last edit almost 4 years ago by awhtou
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Cd B (5925 --> 5900 KC)

Time Marker Dist. Res. Dist. Marker Res Freq (Δf)²
45 60.7 51.0 2 5903.9 KC -0.2
212 60.1 46.4 1 5905.8 -0.2 0.04
267 61.7 46.8 2 5905.9 -0.1 0.5 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
Last edit almost 4 years ago by awhtou
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[entire equation is crossed out]

Last edit almost 4 years ago by awhtou
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with diamagnetic convection = 0.00078 but without radiation convection

Diagr Diamagnetic convection

Last edit almost 4 years ago by awhtou
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