Correcting magnetic probe perturbations on current density measurements of current carrying plasmas
A method to infer the current density distribution in the current sheath of a plasma focus discharge from a magnetic probe is formulated and then applied to experimental data obtained in a 1.1 kJ device. Distortions on the magnetic probe signal caused by current redistribution and by a time-dependen...
| Autor principal: | |
|---|---|
| Otros Autores: | , , , , |
| Formato: | Capítulo de libro |
| Lenguaje: | Inglés |
| Publicado: |
2010
|
| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
| Sumario: | A method to infer the current density distribution in the current sheath of a plasma focus discharge from a magnetic probe is formulated and then applied to experimental data obtained in a 1.1 kJ device. Distortions on the magnetic probe signal caused by current redistribution and by a time-dependent total discharge current are considered simultaneously, leading to an integral equation for the current density. Two distinct, easy to implement, numerical procedures are given to solve such equation. Experimental results show the coexistence of at least two maxima in the current density structure of a nitrogen sheath. © 2010 American Institute of Physics. |
|---|---|
| Bibliografía: | Lee, P., Feng, X., Zhang, G.X., Liu, M.H., Lee, S., (1997) Plasma Sources Sci. Technol., 6, p. 343. , PSTEEU 0963-0252,. 10.1088/0963-0252/6/3/011 Lee, S., Lee, P., Zhang, G., Feng, X., Gribkov, V.A., Liu, M., Serban, A., Wong, T.K.S., (1998) IEEE Trans. Plasma Sci., 26, p. 1119. , ITPSBD 0093-3813,. 10.1109/27.725141 Gribkov, V.A., Srivastava, A., Keat, P.L.C., Kudryashov, V., Lee, S., (2002) IEEE Trans. Plasma Sci., 30, p. 1331. , ITPSBD 0093-3813,. 10.1109/TPS.2002.802156 Wong, D., Tan, T.L., Patran, A., Hassan, S.S.M., Zhang, T., Springham, S.V., Lee, S., Lee, P., (2006) Proceedings of the Sixth International Conference on Dense Z-Pinches, 808, pp. 227-230. , (AIP, New York), Vol Kelly, H., Lepone, A., Márquez, A., Lamas, D., Oviedo, C., (1996) Plasma Sources Sci. Technol., 5, p. 704. , PSTEEU 0963-0252,. 10.1088/0963-0252/5/4/012 Zeb, S., Sadiq, M., Qayyum, A., Murtaza, G., Zakaullah, M., Deposition of diamond-like carbon film using dense plasma focus (2007) Materials Chemistry and Physics, 103 (2-3), pp. 235-240. , DOI 10.1016/j.matchemphys.2007.02.020, PII S0254058407000727 Zeb, S., Qayyum, A., Shafiq, M., Zakaullah, M., Deposition of titanium nitride on AISI-304 in a plasma focus environment (2008) EPJ Applied Physics, 42 (2), pp. 145-151. , DOI 10.1051/epjap:2008052 Khan, I.A., Hassan, M., Hussain, T., Ahmad, R., Zakaullah, M., Rawat, R.S., (2009) Appl. Surf. Sci., 255, p. 6132. , ASUSEE 0169-4332,. 10.1016/j.apsusc.2009.01.066 Zakaullah, M., Alamgir, K., Shafiq, M., Sharif, M., Waheed, A., Murtaza, G., (2000) J. Fusion Energy, 19, p. 143. , JFENDS 0164-0313,. 10.1023/A:1013970229271 Castillo-Mejia, F., Milanese, M.M., Moroso, R.L., Pouzo, J.O., Santiago, M.A., Small plasma focus studied as a source of hard X-ray (2001) IEEE Transactions on Plasma Science, 29 (6), pp. 921-926. , DOI 10.1109/27.974980, PII S0093381301112038 Moreno, C., V́nere, M., Barbuzza, R., Del Fresno, M., Ramos, R., Bruzzone, H., Florido, P., Clausse, A., (2002) Braz. J. Phys., 32, p. 20. , BJPHE6 0103-9733,. 10.1590/S0103-97332002000100004 Hussain, S., Shafiq, M., Ahmad, R., Waheed, A., Zakaullah, M., Plasma focus as a possible x-ray source for radiography (2005) Plasma Sources Science and Technology, 14 (1), pp. 61-69. , DOI 10.1088/0963-0252/14/1/008 Moreno, C., Raspa, V., Sigaut, L., Vieytes, R., Clausse, A., Plasma-focus-based tabletop hard x-ray source for 50 ns resolution introspective imaging of metallic objects through metallic walls (2006) Applied Physics Letters, 89 (9), p. 091502. , DOI 10.1063/1.2335631 Castillo, F., Gamboa-DeBuen, I., Herrera, J.J.E., Rangel, J., Villalobos, S., High contrast radiography using a small dense plasma focus (2008) Applied Physics Letters, 92 (5), p. 051502. , DOI 10.1063/1.2840191 Bogolubov, Ye.P., Koltunov, M.V., Lemeshko, B.D., Mikerov, V.I., Samosyuk, V.N., Sidorov, P.P., Yurkov, D.I., (2009) Nucl. Instrum. Methods Phys. Res. A, 605, p. 62. , NIMAER 0168-9002,. 10.1016/j.nima.2009.01.128 Gribkov, V.A., (2008) Proceedings of the Plasma and Fusion Science 17th IAEA Technical Meeting on Research Using Small Fusion Devices, 996, p. 51. , (AIP, New York) Bruzzone, H., Moreno, C., Kelly, H., (1991) Meas. Sci. Technol., 2, p. 1195. , MSTCEP 0957-0233,. 10.1088/0957-0233/2/12/015 Bilbao, L., Grondona, D., (1994) Meas. Sci. Technol., 5, p. 288. , MSTCEP 0957-0233,. 10.1088/0957-0233/5/3/013 Bruzzone, H., Grondona, D., (1997) Plasma Phys. Controlled Fusion, 39, p. 1315. , PPCFET 0741-3335,. 10.1088/0741-3335/39/9/004 Malmberg, J.H., (1964) Rev. Sci. Instrum., 35, p. 1622. , RSINAK 0034-6748,. 10.1063/1.1719242 Linz, P., (1985) Analytical and Numerical Methods for Volterra Equations, , (SIAM, Philadelphia) Press, W.H., Teukolsky, S.A., Vetterling, W.T., Flannery, B.P., (1992) Numerical Recipes in Fortran. The Art of Scientific Computing, , (Cambridge University Press, New York) http://dx.doi.org/10.1063/1.3480556, See supplementary material at E-RSINAK-81-012009 for a MATLAB script that evaluates the current density from measured magnetic probe and Rogowski signals and for an example that uses experimental signals |
| ISSN: | 00346748 |
| DOI: | 10.1063/1.3480556 |