Proton transfer studies of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Tc</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>98</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>

Martin, D.J.; Macphail, M.R.

doi:10.1103/physrevc.13.1117

Cited by 13 publications

(3 citation statements)

References 10 publications

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“…It is conceivable that stochasticity in many MHD flows is of intrinsic nature. This is the case for a number of simple model systems where a 'strange attractor' has been found (Lorenz 1963; Ruelle & Takens 1971; Martin 1976).…”

Section: Introductionmentioning

confidence: 92%

Fully developed MHD turbulence near critical magnetic Reynolds number

Léorat

Pouquet²,

Frisch³

1981

J. Fluid Mech.

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Liquid-sodium-cooled breeder reactors may soon be operating at magnetic Reynolds numbers RM where magnetic fields can be self-excited by a dynamo mechanism (as first suggested by Bevir 1973). Such flows have kinetic Reynolds numbers RV of the order of 107 and are therefore highly turbulent.This leads us to investigate the behaviour of MHD turbulence with high RV and low magnetic Prandtl numbers. We use the eddy-damped quasi-normal Markovian closure applied to the MHD equations. For simplicity we restrict ourselves to homogeneous and isotropic turbulence, but we do include helicity.We obtain a critical magnetic Reynolds number RMc of the order of a few tens (non-helical case) above which magnetic energy is present. RMc is practically independent of RV (in the range 40 to 106). RMc can be considerably decreased by the presence of helicity: when the overall size of the flow L is much larger than the integral scale l0, RMc can drop below unity as suggested by an α-effect argument. When L ≈ l0 the drop can still be substantial (factor of 6) when helicity is a maximum. We examine how the turbulence is modified when RM crosses RMc: presence of magnetic energy, decreased kinetic energy, steepening of kinetic-energy spectrum, etc.We make no attempt to obtain quantitative estimates for a breeder reactor, but discuss some of the possible consequences of exceeding RMc, such as decreased turbulent heat transport. More precise information may be obtained from numerical simulations and experiments (including some in the subcritical regime).

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Section: Introductionmentioning

confidence: 92%

Fully developed MHD turbulence near critical magnetic Reynolds number

Léorat

Pouquet²,

Frisch³

1981

J. Fluid Mech.

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“…Moreover, there have been several β decay measurements from both sides [24][25][26][27][28][29][30][31]. Different reaction studies, such as (p, n) [32][33][34] [38,39], ( 3 He, 6 He) [40], (t, p) [41], (t, α) [42], and (n, α) [43], have also yielded information on molybdenum isotopes.…”

Section: Comparison To Previous Measurementsmentioning

confidence: 99%

Penning-trap mass measurements on 92, 94-98, 100Mo with JYFLTRAP

et al. 2012

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“…In the calculation of the intensity of the 21.8 keV y-line the contribution of the Ru Kp X-rays has been taken into account, During our measurements the level scheme and the isomeric decay of 98Tc have been investigated by other authors [14][15][16], too. In contrast to Wender et al [16] who consider the observed 21,8 keV y-line to be a M 1 transition to the ground state, we suppose the 91.2 keV level to be an isomeric state which decays by the 21.8keV transition followed by the 43.5keV line and a highly converted transition of about 26 keV …”

Section: 19stc Isomermentioning

confidence: 99%

An investigation of short-lived isomers in the nuclei90,92Nb,99Mo,98,100,101Tc and101Ru

Bartsch¹,

Huber²,

Kneißl³

et al. 1978

Z Physik A

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Short-lived isomers in the nuclei 90, 92Nb ' 99Mo ' 98,1oo, lOlTc and l~ populated in photonuclear reactions were studied by pulsed beam techniques. Energy and half-life of the 7-rays deexciting the isomeric levels were measured by recording energy-time spectra. The delayed y-rays and K X-rays were detected by means of an intrinsic Ge-detector of high resolution. From the measured intensity ratios internal conversion coefficients were determined. The multipolarities of the isomeric transitions could be deduced in most cases. A classification of the observed isomers has been tried on the basis of the obtained experimental results and most recent literature data.

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Proton transfer studies ofTc98

Cited by 13 publications

References 10 publications

Fully developed MHD turbulence near critical magnetic Reynolds number

Fully developed MHD turbulence near critical magnetic Reynolds number

Penning-trap mass measurements on 92, 94-98, 100Mo with JYFLTRAP

An investigation of short-lived isomers in the nuclei90,92Nb,99Mo,98,100,101Tc and101Ru

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