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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 2 (1983), S. 224-230 
    ISSN: 0392-6737
    Keywords: Biomagnetism (including magnetocardiography) ; Superconducting devices ; superconducting magnets
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Si descrive la strumentazione per le applicazioni biomagnetiche. Le piccole dimensioni e la leggerezza del gradiometro SQUID permettono il facile trasporto e posizionamento dello strumento, rendendo cosí possibile le misurazioni biomagnetiche in una qualsiasi locazione in cui non ci siano rumori. L’apparecchio è provvisto di un alimentatore a batteria e, se riempito con 60 cm3 di elio liquido, funzionerà initerrottamente per 6 ore. L’apparecchio è adatto per la magnetocardiografia.
    Notes: Summary The instrumentation for biomagnetic applications is described. The small size and weight of the SQUID gradiometer permit easy transport and positioning of the instrument, thus making biomagnetic measurements possible in any noise-free location. The equipment is provided with a battery power supply, and, when filled with 60 cm3 of liquid helium, will operate continuously for 6 h. The device is suitable for magnetocardiography.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of low temperature physics 30 (1978), S. 609-619 
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: The mass diffusion coefficient in nonsuperfluid 3He-4He solutions was measured at temperatures 0.55–1.05 K and at a pressure of 26 atm in the concentration range 60–100% 3He by the method of crystal dissolution. This coefficient has a value of about 2 × 10−5 cm2/sec, which is 1.5 times less than the spin diffusion coefficient for the same concentrations. This experimental result shows the importance of the spin fluctuations for the description of liquid 3He at temperatures above 0.1 K. The experiment in the solid at 0.6 K and at 31 atm has shown that the mass diffusion coefficient on the solid 3He-solid 4He interface is very small, D 〈 6 × 10−11 cm2/sec.
    Type of Medium: Electronic Resource
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