Zobrazeno 1 - 10
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pro vyhledávání: '"J L Symonds"'
Publikováno v:
Proceedings of the Physical Society. Section A. 69:43-48
The activities produced in the bombardment of aluminium with protons in the energy range 200-980 MeV have been studied. The ratio of the cross section for the production of 11C from polythene to that for both 18F and 24Na from aluminium are given in
Autor:
J L Symonds, W D Allen
Publikováno v:
Proceedings of the Physical Society. 59:622-629
Using a CV76 magnetron at a wave-length of 10.0 cm. (maximum power 500 kw.; power available for acceleration, 300 kw.), and a 3-stage single cavity, electrons were accelerated to a voltage of 0.85 Mev. The expected figure was approximately 1.1 Mev. T
Publikováno v:
Proceedings of the Physical Society. Section A. 68:1001-1007
Polystyrene discs were irradiated in the scattered proton beam of the Birmingham synchrotron. The proton flux was found by counting tracks in a nuclear emulsion exposed near the polystyrene disc. From the observed activity of the discs the cross sect
Autor:
J L Symonds
Publikováno v:
Reports on Progress in Physics. 18:83-126
Descriptions which are briefly theoretical and essentially practical are given of a number of the techniques of magnetic field measurement, used or developed in the period of about twenty years since the last review of the subject. Particular attenti
Publikováno v:
Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences. 230:204-215
The Birmingham proton synchrotron is described in relation to its experimental use as a source of high-energy protons. Information is given on matters such as the dimensions and intensity of the circulating beam, the methods by which its impact upon
Publikováno v:
Proceedings of the Physical Society. Section A. 70:824-832
A study has been made of some of the active products from the high energy bombardment of carbon, nitrogen, oxygen and fluorine. The ratios of cross sections to the 12C(p, pn)11C cross section were found and the excitation functions estimated. Deviati
Publikováno v:
Proceedings of the Physical Society. 59:677-693
In the type of synchrotron for accelerating protons, the particle velocity, and consequently the accelerating radio-frequency, increase with increasing particle energy. In such a case the particle motion acquires properties which necessitate a carefu
Autor:
J. L. Symonds
Publikováno v:
Nature. 208:1195-1196
DURING the past year, radio astronomers1,2 have been increasingly interested in microwave signals at frequencies of 1,612, 1,665, 1,667 and 1,720 Mc/s, produced by transitions between four energy levels of the OH molecule in the 2Π3/2 state. Theoret
Autor:
S. T. Butler, J. L. Symonds
Publikováno v:
Physical Review. 83:858-858
Autor:
J. M. Cowley, J. L. Symonds
Publikováno v:
Transactions of the Faraday Society. 44:53