Dr. Phil. Nat. (Physics)

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  Articles
  1. N. Joshi, C. Heiliger, O. Meusel
    "Three dimensional Particle-in-Cell simulation of a radio-frequency ion thruster (RIT-2.5) : model validation with experiments"
    J Electr Propuls 4, 66 (2025),
    doi:10.1007/s44205-025-00168-4
  2. P. Auffarth, N. Joshi, C. Heiliger
    "2.xD - Particle-in-Cell simulation of radio-frequency ion thruster RIT-2.5 using cylindrical coordinate system"
    J Electr Propuls 4, 69 (2025),
    doi.org/10.1007/s44205-025-00167-5
  3. N. Joshi, O. Meusel
    "Experimental Characterization and Simulation-Based Analysis of the RIT-2.5 Radiofrequency Ion Thruster"
    Submitted to Rev. Sci. Instru.,
    prepint on https://arxiv.org/
  4. N. Joshi, C. Heiliger
    "Particle-in-Cell simulation of radio-frequency ion thruster RIT-1.0"
    J Electr Propuls 3, 5 (2024)
    doi:10.1016/j.nimb.2013.06.033
  5. N. Joshi, C. Heiliger
    "Fluid-Kinetic-hybrid simulation for ion thruster using polymorphic particles"
    J Electr Propuls 2, 20 (2023)
    doi:10.1007/s44205-023-00056-9
  6. Kristof Holste, P. Dietz, S. Scharmann, K. Keil, T. Henning, D. Zschätzsch, M. Reitemeyer, B. Nauschütt, F. Kiefer, F. Kunze, J. Zorn, C. Heiliger, N. Joshi, U. Probst, R. Thüringer, C. Volkmar, D. Packan, S. Peterschmitt, K. -T. Brinkmann, H.-G. Zaunick, M. H. Thoma, M. Kretschmer, H. J. Leiter, S. Schippers, K. Hannemannand P. J. Klar
    "Ion thrusters for electric propulsion: Scientific issues developing a niche technology into a game changer"
    Review Scientific Instruments, 91, 061101 (2020)
    doi:10.1063/5.0010134
  7. N. Joshi, O. Meusel
    "CHOPPI: A Particle In Cell code for ion beam transport through beam chopper : A demonstration with experiments"
    NIM, A Volume 951, 21 January 2020, 162939
    doi:10.1016/j.nima.2019.162939
  8. N. Joshi
    "Experiments with low energy ion beam transport into toroidal magnetic fields"
    NIM A, Volume 943, 1 November 2019, 162495
    https://doi.org/10.1016/j.nima.2019.162495
  9. S. Schwarz, M. Brodour, G. Bollen, N. Joshi, D.J. Morrissey, R. Ringle
    "The NSCL cyclotron gas stopper-under construction"
    NIM B, Volume 317, Part B, 15 December 2013, Pages 463-467,
    doi:10.1016/j.nimb.2013.05.056
  10. M. Brodour, G. Bollen, N. Joshi, D.J. Morrissey, S. Schwarz
    "Traveling wave ion transport for the cyclotron gas stopper"
    NIM B, Volume 317, Part B, 15 December 2013, Pages 468-472
    doi:10.1016/j.nimb.2013.06.033
  11. C.Wiesner, L.P. Chau, H. Dinter, M. Droba, M. Heilmann, N. Joshi, O. Meusel, D. Noll, H. Podlech, U. Ratzinger, R. Reifarth, A. Schempp, S. Schmidt, W. Schweizer, K. Volk and C. Wagner
    "Proton Driver Linac for the Frankfurt Neutron Source"
    AIP Conf. Proc. 1265, 487 (2010)
    doi.org/10.1063/1.3480247
  12. N. Joshi, M. Droba, O. Meusel, U. Ratzinger
    "Characterization of volume type ion source for p, H2+ , H3+ beams"
    NIM A, Volume 606, Issue 3, 2009, p. 310-313
    doi:10.1016/j.nima.2009.05.008

   Conference Proceedings
  1. K. Keil, K. Holste, P. Klar, N. Joshi, C. Heiliger
    "Holistic Modeling of Erosion processes in Radio-Frequency Ion thrusters"
    Conference Proc. IEPC-2025-207, London 2025
  2. N. Joshi, P. Auffarth, C. Heiliger
    "2.xD Simulation of Radio-frequency Ion Thruster (RIT-2.5)"
    Conference Proc. IEPC-2024-618, Toulouse 2024.
  3. K. Keil, N. Joshi, K. Holste, C. Heiliger, P. Klar
    "Holistic modelling of erosion processes in Radio-Frequency Ion Thrusters"
    Conference Proc. SPACE PROPULSION 2024, SP2024_#363 Glasgow 2024
  4. N. Joshi, P. Auffarth, C. Heiliger
    "Particle in Cell simulation for large Radio-frequency Ion thruster using 3D cylindrical coordinate system"
    Conference Proc. IEPC-2022-256, Boston 2022
  5. K. Keil, N. Joshi, K. Holste, C. Heiliger, P. Klar
    "Modelling of erosion processes in gridded ion engines in combination with global model for radio-frequency ion thruster"
    Conference Proc. IEPC-2022-259, Boston 2022
  6. K. Keil, N. Joshi, K. Holste, C. Heiliger, P. Klar
    "Ion Optics Simulation with the Particle-in-Cell Method and Calculation of Grid Erosion"
    Conference Proc. SPACE PROPULSION 2022, SP2022_#294 Estoril 2022
  7. N. Joshi, G. Bollen, M. Brodour, D.J. Morrissey, S. Schwarz
    "Status of the NSCL Cyclotron gas stopper"
    Conference Proc. IPAC 2012
  8. C. Wiesner, L. P. Chau, H. Dinter, M. Droba, N. Joshi, O. Meusel, I. Müller and U. Ratzinger
    "E x B Chopper System for High Intensity Proton Beams"
    Conference Proc. LINAC 2010, p. 914-916
  9. U. Ratzinger, L. P. Chau, H. Dinter, M. Droba, N. Joshi, O. Meusel, I. Müller, D. Noll, H. Podlech, R. Reifarth, A. Schempp
    "The Frankfurt Neutron Source FRANZ"
    Conference Proc. IPAC 2010, p. 597-599
  10. M. Droba, N. Joshi, O. Meusel, H. Niebuhr, U. Ratzinger
    "Beam Accumulation in Stellarator Type Storage Ring"
    Conference Proc. IPAC 2010, p. 4473-4475
  11. N. Joshi, M. Droba, O. Meusel, H. Niebuhr, U. Ratzinger
    "Scaled down Experiments for a Stellarator type Magnetostatic Storage Ring"
    Conference Proc. IPAC 2010, p. 3885-3887
  12. C. Wiesner, L. P. Chau, M. Droba, N. Joshi, O. Meusel, U. Ratzinger
    "Chopper for Intense Proton Beams at Repetition Rates up to 250 kHz"
    Conference Proc. PAC 2009
  13. N. Joshi, M. Droba, O. Meusel, U. Ratzinger
    "Beam transport in toroidal magnetic field"
    Conference Proc. EPAC 2008, p. 2641-2643
  14. L. P. Chau, M. Droba, N. Joshi, O. Meusel, U. Ratzinger, C. Wiesner
    "One nanosecond bunch compressor for intense proton beams"
    Conference Proc. EPAC 2008, p. 3578-3580
  15. M. Droba, N. Joshi, O. Meusel, U. Ratzinger
    "Design Studies on Novel Stellarator Type High Current Storage Ring"
    Conference Proc. EPAC 2006, p. 297-299

   Oral Presentations
  1. "2.xD Simulation of Radio-frequency Ion Thruster (RIT-2.5)"
    International Electric Propulsion Conference 2024, Toulouse Pdf Presentation
  2. "Radio Frequency Ion Thruster: Principles and modelling"
    Institut fuer Angewandte Physik , Sept. 2023 Pdf Presentation
  3. "From Machine building to Machine Learning: Accelerators with AI"
    Nov. 2017, Pdf Presentation
  4. "Cyclotron Gas Stopper and Advanced Low-energy Ion Transport Techniques"
    Apr. 2014, Pdf Presentation
  5. "Simulation of the NSCL Cyclotron Gas Stopper"
    APS DNP meeting 2011, Pdf Presentation
  6. "Ion Beams: Accumulation,Instrumentation and Production of High Current Beams"
    Accelerator Division Seminar, ESS, Lund, Sweden, 08 Nov. 2010
  7. "PIC Method for Particle Simulation"
    HICforFAIR Workshop, "Aktuelle Probleme der Beschleuniger-und Plasmaphysik", Riezlern 2010, Pdf Presentation.
  8. "Beam Transport Experiments in Toroidal Magnetic Fields"
    "Aktuelle Probleme der Beschleuniger- und Plasmaphysik", Riezlern 2009.


   Internal Reports
  1. "Status of Magnetostatic Ring Studies"
    Pdf Report
  2. "High Voltage Pulse Generator for an ExB Chopper System"
    Pdf Report
  3. "Square wave integrator circuit"
    Pdf Report


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