Magnetic Moment of the Proton in Units of the Bohr Magneton; the Magnetic Moment of the Electron

Sidney Liebes; Peter Franken

doi:10.1103/physrev.116.633

Magnetic Moment of the Proton in Units of the Bohr Magneton; the Magnetic Moment of the Electron

Physical Review ◽

10.1103/physrev.116.633 ◽

1959 ◽

Vol 116 (3) ◽

pp. 633-650 ◽

Cited By ~ 34

Author(s):

Sidney Liebes ◽

Peter Franken

Keyword(s):

Magnetic Moment ◽

Bohr Magneton

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An Attempt to Detect the Neutrino

Mathematical Proceedings of the Cambridge Philosophical Society ◽

10.1017/s0305004100012986 ◽

1935 ◽

Vol 31 (1) ◽

pp. 99-107 ◽

Cited By ~ 26

Author(s):

M. E. Nahmias

Keyword(s):

High Pressure ◽

Magnetic Moment ◽

Ionization Chamber ◽

Solid Angle ◽

Total Solid ◽

Effective Length ◽

Single Pair ◽

Wave Mechanics ◽

Bohr Magneton ◽

Total Solid Angle

It has been shown by Chadwick and Lee(1), using a high-pressure ionization chamber, that if one neutrino is emitted by each disintegrating Ra E nucleus, then the neutrinos do not produce more than one pair of ions in 150 km. of air at N.T.P. Calculations based on the wave mechanics show that the ionization due to a neutrino having a magnetic moment of one Bohr magneton would be very easily detectable(2), whereas it has peen estimated that if the neutrino has no magnetic moment at all its encounters with nuclei will be as scarce as one in 1016 km. of water(3). I have investigated the matter again, using two Geiger-Müller counters, instead of an ionization chamber. The counters have the advantage of giving a discharge for a single pair of ions(4). The two counters of 15×5cm. were connected in parallel, and filled with air at 76mm. pressure. They were shielded on all sides by 45 mm. of lead. A source of 7 mg. of Ra (D, E, F) was placed at a distance of 11 cm. from the centres of the two counters, so that the total solid angle subtended by the counters at the source was 0·10, expressed as a fraction of the complete sphere. Assuming that both the disintegrating atoms of Ra D and Ra E give one neutrino, then the number of neutrinos crossing the counters per minute is 3·1 × 109. The average effective length of the path in the counter, reduced to N.T.P., is 0·3 cm., so in one min. the total range in air of all the neutrinos crossing the counters is 9·3 × 108 cm.

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A proposal on cryogenic detection of neutrino magnetic moment at a level better than 10?11 �B (Bohr magneton)

Journal of Low Temperature Physics ◽

10.1007/bf00693506 ◽

1993 ◽

Vol 93 (3-4) ◽

pp. 745-749 ◽

Cited By ~ 2

Author(s):

B. S. Neganov ◽

V. N. Trofimov ◽

V. N. Stepankin

Keyword(s):

Magnetic Moment ◽

Neutrino Magnetic Moment ◽

Bohr Magneton ◽

Better Than

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MAGNETIC MOMENT AND HYPERFINE FIELD DISTRIBUTION IN Fe3−xCrxSi ALLOYS

International Journal of Modern Physics B ◽

10.1142/s0217979293001967 ◽

1993 ◽

Vol 07 (01n03) ◽

pp. 911-914

Author(s):

L. DOBRZYŃSKI ◽

D. SATULA ◽

K. SZYMAŃSKI ◽

J. WALISZEWSKI ◽

A. MALINOWSKI ◽

...

Keyword(s):

Neutron Diffraction ◽

Hyperfine Field ◽

Field Distribution ◽

Magnetic Moment ◽

Chromium Content ◽

Neutron Data ◽

Hyperfine Field Distribution ◽

Bohr Magneton ◽

Local Environments ◽

Spectroscopy Studies

The magnetization, neutron diffraction and Mössbauer spectroscopy studies have been carried out on Fe3−xCrxSi alloys with x<0.4. It has been shown, that chromium assumes a magnetic moment of the order of one Bohr magneton, ordered antiparallel with respect to the iron magnetic moment. This latter decreases linearly with chromium content. From hyperfine field distribution the probabilities of various local environments and site occupations by Cr were evaluated. The results are compared with neutron data.

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