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Black Hole

Lensing of space time around a black hole. At Oxford we study black holes observationally and theoretically on all size and time scales - it is some of our core work.

Credit: ALAIN RIAZUELO, IAP/UPMC/CNRS. CLICK HERE TO VIEW MORE IMAGES.

Jirina Stone

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Sub department

  • Astrophysics
jirina.stone@physics.ox.ac.uk
Telephone: 01865 (2)73306
Denys Wilkinson Building, room 704
  • About
  • Publications

Test and application of a symmetrical four-detector Compton polarimeter for low temperature nuclear orientation and in-beam spectroscopy

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment Elsevier 317:1-2 (1992) 242-250

Authors:

JK Deng, WC Ma, JH Hamilton, AV Ramayya, J Rikovska, NJ Stone, WL Croft, RB Piercey, JC Morgan, PF Mantica
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Hyperfine field and fraction in high field site for implanted 221FrFe

Nuclear Inst. and Methods in Physics Research, B 64:1-4 (1992) 227-231

Authors:

M Lindroos, P Richards, J Rikovska, NJ Stone, K Nishimura, IS Oliveira

Abstract:

A low temperature nuclear orientation study has been performed on Fr in Fe. Anisotropy measurements of both gamma rays and alpha particles have been done. The best value for the hyperfine field, obtained in the gamma-ray experiment, is 129.7(40) T. The results from the alpha-particle experiment support this value. The value is a factor of 2 larger than measured earlier; at present there is no good explanation for this discrepancy. A lower limit of 37% and an upper limit of 45% of Fr in high field site can be set. © 1992.
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Hyperfine field and fraction in high field site for implanted 221FrFe

Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms Elsevier 64:1-4 (1992) 227-231

Authors:

M Lindroos, P Richards, J Rikovska, NJ Stone, K Nishimura, IS Oliveira, NICOLE and ISOLDE Collaborations
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DETERMINATION OF THE MAGNETIC DIPOLE-MOMENT OF SB-114 VIA ONLINE NUCLEAR ORIENTATION

HYPERFINE INTERACTIONS 75:1-4 (1992) 117-124

Authors:

BE ZIMMERMAN, WB WALTERS, PF MANTICA, HK CARTER, MG BOOTH, J RIKOVSKA, NJ STONE
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GROUND-STATE MAGNETIC-MOMENTS OF BI-212,BI-213

HYPERFINE INTERACTIONS 75:1-4 (1992) 109-116

Authors:

M LINDROOS, P RICHARDS, J BLOMQVIST, J RIKOVSKA, NJ STONE
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