All Stories

  1. Antimatter, and why we do it.

    Article • September 2014, Wiley

    Professor Niels Madsen

  2. Laser-cooling assisted antihydrogen trapping

    Article • New Journal of Physics, June 2014, Institute of Physics Publishing

    Professor Niels Madsen, Svante Jonsell

  3. An experimental limit on the charge of antihydrogen

    Article • Nature Communications, June 2014, Springer Science + Business Media

    Professor Niels Madsen, Svante Jonsell

  4. Physics with Trapped Charged Particles

    Article • March 2014, World Scientific Pub Co Pte Lt

    Professor Niels Madsen

  5. ALPHA: antihydrogen and fundamental physics

    Article • Hyperfine Interactions, February 2014, Springer Science + Business Media

    Professor Niels Madsen

  6. Chapter 8: Antihydrogen Formation and Trapping

    Article • February 2014, World Scientific Pub Co Pte Lt

    Professor Niels Madsen

  7. Chapter 1: Physics with Trapped Charged Particles

    Article • February 2014, World Scientific Pub Co Pte Lt

    Professor Niels Madsen

  8. In situ electromagnetic field diagnostics with an electron plasma in a Penning–Malmberg trap

    Article • New Journal of Physics, January 2014, Institute of Physics Publishing

    Professor Niels Madsen, Svante Jonsell

  9. The ALPHA antihydrogen trapping apparatus

    Article • Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, January 2014, Elsevier

    Professor Niels Madsen, Svante Jonsell

  10. Description and first application of a new technique to measure the gravitational mass of antihydrogen

    Article • Nature Communications, April 2013, Springer Science + Business Media

    Professor Niels Madsen, Svante Jonsell

  11. Experimental and computational study of the injection of antiprotons into a positron plasma for antihydrogen production

    Article • Physics of Plasmas, April 2013, American Institute of Physics

    Professor Niels Madsen, Svante Jonsell

  12. Antihydrogen in a bottle

    Article • Physics Education, February 2013, Institute of Physics Publishing

    Professor Niels Madsen

  13. Antiparticle sources for antihydrogen production and trapping

    Article • Journal of Physics Conference Series, January 2011, Institute of Physics Publishing

    Professor Niels Madsen, Svante Jonsell

  14. Search for trapped antihydrogen

    Article • Physics Letters B, January 2011, Elsevier

    Professor Niels Madsen, Svante Jonsell

  15. Autoresonant Excitation of Antiproton Plasmas

    Article • Physical Review Letters, January 2011, American Physical Society (APS)

    Professor Niels Madsen, Svante Jonsell

  16. Trapped antihydrogen

    Article • Nature, November 2010, Springer Science + Business Media

    Professor Niels Madsen, Svante Jonsell

  17. Antihydrogen for fundamental physics

    Article • Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences, July 2010, Royal Society Publishing

    Professor Niels Madsen

  18. Evaporative Cooling of Antiprotons to Cryogenic Temperatures

    Article • Physical Review Letters, July 2010, American Physical Society (APS)

    Professor Niels Madsen, Svante Jonsell

  19. Antihydrogen formation dynamics in a multipolar neutral anti-atom trap

    Article • Physics Letters B, March 2010, Elsevier

    Professor Niels Madsen

  20. Antiproton, positron, and electron imaging with a microchannel plate/phosphor detector

    Article • Review of Scientific Instruments, December 2009, American Institute of Physics

    Professor Niels Madsen

  21. Magnetic multipole induced zero-rotation frequency bounce-resonant loss in a Penning–Malmberg trap used for antihydrogen trapping

    Article • Physics of Plasmas, October 2009, American Institute of Physics

    Professor Niels Madsen

  22. Antihydrogen Physics at ALPHA/CERNThis paper was presented at the International Conference on Precision Physics of Simple Atomic Systems, held at University of Windsor, Windsor, Ontario, Canada on 21–26 July 2008.

    Article • Canadian Journal of Physics, July 2009, Canadian Science Publishing

    Professor Niels Madsen

  23. Temporally Controlled Modulation of Antihydrogen Production and the Temperature Scaling of Antiproton-Positron Recombination

    Article • Physical Review Letters, July 2008, American Physical Society (APS)

    Professor Niels Madsen

  24. Compression of Antiproton Clouds for Antihydrogen Trapping

    Article • Physical Review Letters, May 2008, American Physical Society (APS)

    Professor Niels Madsen

  25. Critical loss radius in a Penning trap subject to multipole fields

    Article • Physics of Plasmas, March 2008, American Institute of Physics

    Professor Niels Madsen

  26. A novel antiproton radial diagnostic based on octupole induced ballistic loss

    Article • Physics of Plasmas, March 2008, American Institute of Physics

    Professor Niels Madsen

  27. Towards trapped antihydrogen

    Article • Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, February 2008, Elsevier

    Professor Niels Madsen

  28. Antihydrogen for precision tests in physics

    Article • Contemporary Physics, January 2008, Taylor & Francis

    Professor Niels Madsen, Svante Jonsell

  29. Production of antihydrogen at reduced magnetic field for anti-atom trapping

    Article • Journal of Physics B Atomic Molecular and Optical Physics, December 2007, Institute of Physics Publishing

    Professor Niels Madsen

  30. Protonium production in ATHENA

    Article • Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, August 2007, Elsevier

    Professor Niels Madsen

  31. Positron plasma control techniques for the production of cold antihydrogen

    Article • Physical Review A, July 2007, American Physical Society (APS)

    Professor Niels Madsen, Rafael Ferragut

  32. Antimatter Plasmas in a Multipole Trap for Antihydrogen

    Article • Physical Review Letters, January 2007, American Physical Society (APS)

    Professor Niels Madsen

  33. Search for Laser-Induced Formation of Antihydrogen Atoms

    Article • Physical Review Letters, November 2006, American Physical Society (APS)

    Professor Niels Madsen

  34. Evidence For The Production Of Slow Antiprotonic Hydrogen In Vacuum

    Article • Physical Review Letters, October 2006, American Physical Society (APS)

    Professor Niels Madsen

  35. A magnetic trap for antihydrogen confinement

    Article • Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, October 2006, Elsevier

    Professor Niels Madsen

  36. Sideband cooling of ions in a non-neutral buffer gas

    Article • Physical Review A, June 2006, American Physical Society (APS)

    Professor Niels Madsen, Rafael Ferragut

  37. Progress with cold antihydrogen

    Article • Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, June 2006, Elsevier

    Professor Niels Madsen

  38. New Source of Dense, Cryogenic Positron Plasmas

    Article • Physical Review Letters, July 2005, American Physical Society (APS)

    Professor Niels Madsen, Rafael Ferragut

  39. Antihydrogen production mechanisms in ATHENA

    Article • Nuclear Physics A, April 2005, Elsevier

    Professor Niels Madsen

  40. Spatial Distribution of Cold Antihydrogen Formation

    Article • Physical Review Letters, January 2005, American Physical Society (APS)

    Professor Niels Madsen

  41. Dynamics of antiproton cooling in a positron plasma during antihydrogen formation

    Article • Physics Letters B, June 2004, Elsevier

    Professor Niels Madsen

  42. Antihydrogen production temperature dependence

    Article • Physics Letters B, March 2004, Elsevier

    Professor Niels Madsen

  43. Three-Dimensional Annihilation Imaging of Trapped Antiprotons

    Article • Physical Review Letters, February 2004, American Physical Society (APS)

    Professor Niels Madsen

  44. High rate production of antihydrogen

    Article • Physics Letters B, January 2004, Elsevier

    Professor Niels Madsen

  45. Complete nondestructive diagnostic of nonneutral plasmas based on the detection of electrostatic modes

    Article • Physics of Plasmas, August 2003, American Institute of Physics

    Professor Niels Madsen

  46. Positron Plasma Diagnostics and Temperature Control for Antihydrogen Production

    Article • Physical Review Letters, July 2003, American Physical Society (APS)

    Professor Niels Madsen

  47. Molecular desorption of stainless steel vacuum chambers irradiated with 4.2 MeV / u lead ions

    Article • Physical Review Special Topics - Accelerators and Beams, January 2003, American Physical Society (APS)

    Professor Niels Madsen

  48. Vertical Blow-up in a Low-Current, Stored, Laser-Cooled Ion Beam

    Article • January 2003, Springer Science + Business Media

    Professor Niels Madsen

  49. Vertical Blow-up in a Low-Current, Stored, Laser-Cooled Ion Beam

    Article • Hyperfine Interactions, January 2003, Springer Science + Business Media

    Professor Niels Madsen

  50. Production and detection of cold antihydrogen atoms

    Article • Nature, September 2002, Springer Science + Business Media

    Professor Niels Madsen

  51. Low-Current, Vertical Blowup in a Stored Laser-Cooled Ion Beam

    Article • Physical Review Letters, December 2001, American Physical Society (APS)

    Professor Niels Madsen

  52. Stability of cooled beams

    Article • Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, February 2000, Elsevier

    Professor Niels Madsen

  53. Equilibrium beam in the Antiproton Decelerator (AD)

    Article • Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, February 2000, Elsevier

    Professor Niels Madsen

  54. Density distribution in laser-cooled bunched beams

    Article • Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, February 2000, Elsevier

    Professor Niels Madsen

  55. Recent results from laser cooling experiments in ASTRID – real-time imaging of ion beams

    Article • Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, February 2000, Elsevier

    Professor Niels Madsen

  56. Density Limitations in a Stored Laser-Cooled Ion Beam

    Article • Physical Review Letters, November 1999, American Physical Society (APS)

    Professor Niels Madsen

  57. Single and multiple intrabeam scattering in a laser cooled beam

    Article • Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, May 1997, Elsevier

    Professor Niels Madsen

  58. Anomalous Schottky Signals from a Laser-Cooled Ion Beam

    Article • Physical Review Letters, January 1995, American Physical Society (APS)

    Professor Niels Madsen