Publications

Books

• Science for Living: 5 Science Topics of Common Interest to Religion and Society
• Particle Accelerators, Colliders, and the Story of High Energy Physics: Charming the Cosmic Snake
• Social Responsibility of Scientists in the Technological Age: Papers from the AAAS Pacific Division Symposium Hawaii, USA, 2017, editors (Jayakumar,R. and Thomas,J.T.)

Contributions to Book Volumes:

• “Magnetic Flux” in Wiley Encyclopedia of Electrical and Electronics Engineering,Ed. John G. Webster, John Wiley & Sons Inc., 1999
• Above Reproduced in “Engineering Superconductivity”, Ed. Peter J. Lee, Wiley-IEEE Press,2001, ISBN: 978-0-471-41116-1

Journal Publications

Beam-Plasma Interaction, Plasma Diagnostics:

• Janssen, G. C. A. M., Jayakumar, R., & Granneman, E. H. A. (1981) The influence of static fields on the dynamic Stark spectra of hydrogen Balmer lines, Journal of Physics B Atomic Molecular Physics, 14, L51 10.1088/0022-3700/14/3/004
• Jayakumar, R., & Fleischmann, H. H. (1985) Changes in spectral intensities of thermal plasmas in the presence offast charged particles., J. Quant. Spectroscopy, Vol. 33, Issue 2, (Feb. 1985) 177 10.1016/0022-4073(85)90103-7.

Co-author: Example
• Bora, D., Jayakumar, R., & Vijayashankar, M. K. (1984) A simple microwave technique for plasma density measurement using frequency modulation, Plasma Physics and Controlled Fusion, 26, 853 10.1088/0741-3335/26/7/002.

Relativistic Electron Rings and Plasma Confinement:

• Jayakumar, R., TaggartJ, D.P., Parker, M.R., Fleischmann, H.H Generation of stable mixed-compact-toroid rings by inducing plasma currents in strong E rings,IEEE Transactions on Plasma Science Vol. 17; p.41, Iss. 1(1989)
• Jayakumar, R., & Fleischmann, H. H. (1989) Density and energy distribution of epithermal secondary electrons in a plasma with fast charged particles, Physics Letters A, 139, 313 10.1016/0375-9601(89)90459-3.
• Jayakumar, R., & Fleischmann, H. H. (1989) Density and energy distribution of epithermal secondary electrons in a plasma with fast charged particles, Physics Letters A, 139, 313 10.1016/0375-9601(89)90459-3.

Co-author: Examples

• Parker, M. R., Taggart, D. P., Jayakumar, R., Hopman, H., & Fleischmann, H. H. (1984) Observation of Highly Elongated Field-Reversing Electron Rings, IEEE Transactions on Plasma Science, 12, 19 10.1109/TPS.1984.4316286.
• Taggart, D. P., Parker, M. R., Hopman, H. J., Jayakumar, R., & Fleischmann, H. H. (1984) Successful Betatron Acceleration of Kiloampere Electron Rings in RECE-Christa, \prl, 52, 1601 10.1103/PhysRevLett.52.1601.

Superconductivity, Superconducting Magnets and Cryogenics

• Jayakumar, R. (1987) Critical energy of superconducting composites, Cryogenics, 27, 421 10.1016/0011-2275(87)90155-X.
• Jayakumar, R. (1989) Values of critical energy for superconducting composites, Cryogenics, 29, 139 10.1016/0011-2275(89)90041-6.
• Jayakumar, R., Kovachev, V., Orrell, D., & Snitchler, G. (1992) AC losses in the SSC high energy booster dipole magnets, IEEE Transactions on Magnetics, 28, 148 10.1109/20.119831
• Jayakumar, R., Kovachev, V., Snitchler, G., & Orrell, D. (1991) AC losses in the SSC high energy booster dipole magnets, Presented at the 12th International Conference on Magnet Technology, 23.
• Jayakumar, R., et.al.,  Methods for field computations for the development of SSC superconducting magnets, IEEE Transactions on Magnetics, 28, 1318 (1992) 10.1109/20.123934.
• Jayakumar, R. J., et.al.,  The USHT-ITER CS model coil program achievements, IEEE Transactions on Applied Superconductivity, 10, 560 (2000) 10.1109/77.828296.

Co-author:Examples

• Smith, S. A., et.al.,  Mechanical Analysis of Beam Tube Assemblies for SSC Dipoles During a Quench, 1991 IEEE Particle Accelerator Conference (APS Beam Physics), 2206.(1991)
• Christopherson, D., Capone, D., Hannaford, R., Remsbottom, R., Delashmit, R., Jayakumar, R. J., Snitchler, G., Scanlan, R., & Royet, J. (1991) SSC 40 mm cable results and 50 mm design discussions, IEEE Transactions on Magnetics, 27, 1881 10.1109/20.133565.
• Spellman, G. P., et.al., Thermomechanical properties of ITER buffer zone candidate materials, Cryogenics,38 (1998)43 10.1016/S0011-2275(97)00108-2.
• Michael, P. C., et.al.,  Mechanical preloading of the Central Solenoid Model Coil, IEEE Transactions on Applied Superconductivity, 11, 1877 (2001) 10.1109/77.920215.
• Michael, P. C., et.al.,  Qualification of joints for the inner module of the ITER CS model coil, IEEE Transactions on Applied Superconductivity, 9, 201 (1999) 10.1109/77.783271.
• Takayasu, M., et.al.,  ITER niobium-tin strands reacted under model coil heat-treatment conditions, IEEE Transactions on Applied Superconductivity, 9, 644 (1999) 10.1109/77.783378.
• Tsuji, H.,et.al.,  Progress of the ITER central solenoid model coil programme, Nuclear Fusion, 41, 645 (2001) 10.1088/0029-5515/41/5/319.

Particle Detector

Co-author: Example

• Adcox, K., et.al.,  PHENIX magnet system, Nuclear Instruments and Methods in Physics Research A, 499, 480 (2003) 10.1016/S0168-9002(02)01951-4.

Plasma Physics, Controlled Fusion and Tokamaks

• Jayakumar, R., Fleischmann, H. H., & Zweben, S. J.,  Collisional avalanche exponentiation of runaway electrons in electrified plasmas, Physics Letters A, 172, 447  (1993)10.1016/0375-9601(93)90237-T.
• Sharma,A.S., Jayakumar,R., Runaway Electrons during Tokamak Start-up, Nuclear Fusion, 28,3 (1988) 481.
• Jayakumar, R., et.al,  Observation and analysis of a resistive mode with interchange parity in negative central shear plasmas in the DIII-D Tokamak, Physics of Plasmas, 9, 5043 (2002) 10.1063/1.1522381.
• Jayakumar, R. J., et.al.,   Observation of magnetohydrodynamic instability and direct measurement of local perturbed magnetic field using motional Stark effect diagnostic, Review of Scientific Instruments, 75, 2995 (2004) 10.1063/1.1785847.
• Jayakumar, R. J., et.al.,  Formation, sustainment and characteristics of current hole plasmas in DIII-D discharges, Nuclear Fusion, 48, (2008) 015004 10.1088/0029-5515/48/1/015004.
• Jayakumar, R. J., Allen, S. L., Burrell, K. H., Lao, L. L., Makowski, M. A., Petty, C. C., Thomas, D. M., Current Profile Measurement on the DIII-D Tokamak,Fusion Science and Technology, (Oct. 2005). 10.13182/FST05-A1044
• Jayakumar, R., Cohen, B. I., Hooper, E. B., Lodestro, L. L., McLean, H. S., Pearlstein, L. D., Wood, R., Turnbull, A. D., & Sovinec, C. (2007) Linear MHD Stability Analysis of the SSPX Spheromak, APS Division of Plasma Physics Meeting Abstracts, 49, CP8.037.

Co-author: Examples

• Petty, C. C., et.al., Advanced tokamak physics in DIII-D, Plasma Physics and Controlled Fusion, 42, 75 (2000) , 10.1088/0741-3335/42/12B/307.
• Luce, T. C., et.al.,  Long pulse high performance discharges in the DIII-D tokamak, Nuclear Fusion, 41, 1585 (2001) 10.1088/0029-5515/41/11/308.
• Wade, M. R., et.al.,  Progress toward long-pulse high-performance Advanced Tokamak discharges on the DIII-D tokamak, Physics of Plasmas, 8, 2208 (2001) 10.1063/1.1355980.
• Murakami, M., et.al.,  Advanced tokamak profile evolution in DIII-D, Physics of Plasmas, 10, 1691(2003) 10.1063/1.1559007.
• Murakami, M., et.al.,  Modification of the Current Profile in High-Performance Plasmas using Off-Axis Electron-Cyclotron-Current Drive in DIII-D, Phys.Rev.Lett. 90, 255001 (2003) 10.1103/PhysRevLett.90.255001.
• Wade, M. R., et.al.,  Integrated, advanced tokamak operation on DIII-D, Nuclear Fusion, 43, 634 (2003) 10.1088/0029-5515/43/7/318.
• Burrell, K. H., et.al.,  Edge radial electric field structure in quiescent H-mode plasmas in the DIII-D tokamak, Plasma Physics and Controlled Fusion, 46, A165 (2004) 10.1088/0741-3335/46/5A/018.
• Thomas, D. M., et.al.,  Prospects for edge current density determination using LIBEAM on DIII-D, Review of Scientific Instruments, 72, 1023 (2001) 10.1063/1.1319612.
• Allen, S. L., et.al.,  Physics of confinement improvement of plasmas with impurity injection in DIII-D, Nuclear Fusion, 41, 317  (2001) 10.1088/0029-5515/41/3/309.
• Strait, E. J., et.al., Resistive wall mode stabilization with internal feedback coils in DIII-D, Physics of Plasmas, 11, 2505 (2004)10.1063/1.1666238.
• Greenfield, C. M., et.al., High performance advanced tokamak regimes in DIII-D for next-step experiments, Physics of Plasmas, 11, 2616 (2004) 10.1063/1.1692133.
• Greenfield, C. M., et.al., Advanced tokamak research in DIII-D, Plasma Physics and Controlled Fusion, 46, B213 (2004) 10.1088/0741-3335/46/12B/019.
• Makowski, M. A., Improved signal analysis for motional Stark effect data, Review of Scientific Instruments, 76, 023706-023706-8  (2005) 10.1063/1.1848471.
• Reimerdes, H., et.al., Measurement of resistive wall mode stability in rotating high-β DIII-D plasmas, Nuclear Fusion, 45, 368  (2005) 10.1088/0029-5515/45/5/007.
• Burrell, K. H., et.al., Advances in understanding quiescent H-mode plasmas in DIII-Da), Physics of Plasmas, 12, 056121  (2005) 10.1063/1.1894745.
• Ferron, J. R., et.al.,  Optimization of DIII-D advanced tokamak discharges with respect to the β limits), Physics of Plasmas, 12, 056126 (2005) 10.1063/1.1871247.
• Wade, M. R., et.al.,  Development, physics basis and performance projections for hybrid scenario operation in ITER on DIII-D, Nuclear Fusion, 45, 407 (2005) 10.1088/0029-5515/45/6/001.
• Murakami, M., et.al., 100% noninductive operation at high beta using off-axis ECCD in DIII-D, Nuclear Fusion, 45, 1419  (2005)10.1088/0029-5515/45/11/024.
• Nazikian, R., et.al. Multitude of Core-Localized Shear Alfvén Waves in a High-Temperature Fusion Plasma, Phys.Rev.Lett., 96, 105006   (2006)10.1103/PhysRevLett.96.105006.
• Garofalo, A. M., Access to sustained high-beta with internal transport barrier and negative central magnetic shear in DIII-Da), Physics of Plasmas, 13, 056110 (2006) 10.1063/1.2185010.
• Lazarus, E. A., et.al., (2006) LETTER TO THE EDITOR: A comparison of sawtooth oscillations in bean and oval shaped plasmas, Plasma Physics and Controlled Fusion, 48, L65  (2006) 10.1088/0741-3335/48/8/L01.
• Van Zeeland, M. A., et.al., Internal Alfvén eigenmode observations on DIII-D, Nuclear Fusion, 46, S880  (2006)10.1088/0029-5515/46/10/S03.
• Doyle, E. J., et.al., Progress on advanced tokamak and steady-state scenario development on DIII-D and NSTX, Plasma Physics and Controlled Fusion, 48, B39 (2006) 10.1088/0741-3335/48/12B/S04.
• Chu, M. S., et.al.  Maintaining the quasi-steady state central current density profile in hybrid discharges, Nuclear Fusion, 47, 434 (2007)10.1088/0029-5515/47/5/007.
• Lazarus, E. A., et.al., Sawtooth oscillations in shaped plasmasa), Physics of Plasmas, 14, 055701(2007) 10.1063/1.2436849.
• Casper, T. A., et.al., Evidence for anomalous effects on the current evolution in the tokamak hybrid operating scenarios, Nuclear Fusion, 47, 825 (2007) 10.1088/0029-5515/47/8/013.
• Petty, C. C., et.al.,Magnetic-Flux Pumping in High-Performance, Stationary Plasmas with Tearing Modes, Phys.Rev.Lett., 102, 045005 (2009)  10.1103/PhysRevLett.102.045005.
• Romero-Talamás, et.al., Measurements and phenomenological modeling of magnetic flux buildup in spheromak plasmas, Physics of Plasmas, 15, 042503 (2008) 10.1063/1.2904917.
• Fowler, T. K., Jayakumar, R., & McLean, H. S.  Stable Spheromaks Sustained by Neutral Beam Injection, Journal of Funsion Energy, 28, 118 (2009) 10.1007/s10894-008-9157-y.
• Petty, C. C.,  et.al.,LETTER: Observation of ELM suppression in hybrid discharges using n = 3 magnetic perturbations on DIII-D, Nuclear Fusion, 50, 022002 (2010) 10.1088/0029-5515/50/2/022002.

MHD Power generation:

• Jayakumar, R., Chakravarthy, D. P., & Rohatgi, V. K. (1977) Directional rf probe for measurement of conductivity of flowing plasmas, Review of Scientific Instruments, 48, 1706 10.1063/1.1134935
• Jayakumar, R., Goyal, D. K., Ghosh, S., & Rohatgi, V. K. (1978) Effect of nonideal conditions on the electrical performance of Faraday MHD generators, International Journal of Energy Research, 2, 265.

Other:

• Jayakumar, R. (1987) "Uniting the Fusion Community", Physics Today, 40, 11 10.1063/1.2820063.
* Jayakumar, Raghavan, "Popularity of Carnatic Music", articles I and II, https://www.karnatik.com/article001.shtml

Music Cartoons

*https://karnatik.com/kartoons.shtml