An insulator-metallic cascade for improved electromagnetic flux compression

Novac, B.M.; Smith, I R; Rankin, D.F.; Zhang, Pu; Hubbard, M.

doi:10.1049/ic:20030098

Cited by 2 publications

(5 citation statements)

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“…The experimental data obtained in the present work do not confirm the conclusion of [28,35,36] about the existence of the precursor. The velocity of the metallization wave D m determined from the time of magnetic compression is close to the expected shock-wave velocity D c , and the found value of α is close (with allowance for the analysis performed above) to the ratio u/D determined on the basis of the shock adiabat of the substance.…”

Section: Gilevcontrasting

confidence: 99%

“…The velocity of the metallization wave D m determined from the time of magnetic compression is close to the expected shock-wave velocity D c , and the found value of α is close (with allowance for the analysis performed above) to the ratio u/D determined on the basis of the shock adiabat of the substance. Thus, the two-stage mechanism of shockwave magnetic cumulation [28,35,36] does not find any evidence in experiments with an electromagnetic electrode gauge, in measurements of electrical conductivity, and in experiments on magnetic cumulation.…”

Section: Gilevmentioning

confidence: 87%

“…Let us compare the results of [28,35,36] with available data on shock compressibility of aluminum powders obtained by different experimental methods [30][31][32][33]37]. The elastic precursor was not registered for such materials, and shock-wave velocity was found to be a linear function of particle velocity.…”

Section: Gilevmentioning

confidence: 99%

“…Another mechanism of shock-wave magnetic cumulation was proposed in [28,35,36]. According to this mechanism, noticeable electrical conductivity emerges in an elastic precursor propagating in the powder ahead of the main shock-wave front.…”

Section: Gilevmentioning

confidence: 99%

“…The first investigations in this area were performed at the Lavrent'ev Institute of Hydrodynamics of the Siberian Division of the Russian Academy of Sciences (Russia) and at the Kumamoto University (Japan). Further studies of various aspects of shock-wave magnetic cumulation [20][21][22][23][24][25][26][27][28] contributed greatly to the development of the method. An important factor for understanding the method capabilities was the absence of growth of short-wave disturbances of the shock front [24].…”

Section: Introductionmentioning

confidence: 99%

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Experimental study of shock-wave magnetic cumulation

Гилев

2008

Combust Explos Shock Waves

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Experiments with aluminum, copper, and silicon powders are performed to study the mechanism of shock-wave magnetic cumulation. For all substances examined, the magnetic field as a function of the cavity area is described by a power dependence with a constant exponent α. The value of α depends substantially on the substance porosity and particle size. For copper and silicon powders and for small-size aluminum powder, the value of α is consistent with the ratio of the particle velocity u to the wave velocity D, as is predicted by a simple model of magnetic cumulation. For the fine and coarse aluminum powders, the value of α is noticeably smaller than the ratio u/D. The lower effectiveness of magnetic compression can be attributed to insufficiently high electrical conductivity (fine powder) and the emergence of conductivity with incomplete compression of the substance (coarse powder). In the first case, diffusion losses of the magnetic flux in the compressed substance are fairly noticeable. In the second case, the work against the magnetic forces is performed by a layer in the shocktransition region, which has a lower particle velocity. The mechanism of magnetic cumulation involves substance metallization under shock compression and expelling of some portion of the magnetic flux to the non-conducting region ahead of the shock front. The two-stage mechanism of cumulation known in the literature (metallization in the elastic precursor and subsequent compression of the field in the main wave) is not validated by experiments with measurements of the particle and wave velocities and electrical conductivity and by experiments on magnetic cumulation.

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Section: Gilevcontrasting

confidence: 99%

Section: Gilevmentioning

confidence: 87%

Section: Gilevmentioning

confidence: 99%

Section: Gilevmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental study of shock-wave magnetic cumulation

Гилев

2008

Combust Explos Shock Waves

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Socially Responsible Organizational Buying: How Can Stakeholders Dictate Purchasing Policies?

Maignan

LeClair

2003

Journal of Macromarketing

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This article investigates socially responsible buying (SRB), a subject that has received little attention in past marketing literature on buyer-seller relationships. On the basis of a brief review of the literature on corporate social responsibility, the article proposes a conceptualization of SRB that accentuates the role of stakeholder and organizational norms, respectively. These conceptual grounds are used to depict various SRB strategies and to advance research propositions outlining their likely antecedents.

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An insulator-metallic cascade for improved electromagnetic flux compression

Cited by 2 publications

References 0 publications

Experimental study of shock-wave magnetic cumulation

Experimental study of shock-wave magnetic cumulation

Socially Responsible Organizational Buying: How Can Stakeholders Dictate Purchasing Policies?

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