التفاصيل البيبلوغرافية
| العنوان: |
First Measurement of the Atomic Electric Dipole Moment of 225 Ra. |
| المؤلفون: |
Parker, R. H.1,2, Dietrich, M. R.1,3, Kalita, M. R.1,4, Lemke, N. D.1 lu@anl.gov, Bailey, K. G.1, Bishof, M.1, Greene, J. P.1, Holt, R. J.1, Korsch, W.4, Lu, Z.-T.1,2, Mueller, P.1, O'Connor, T. P.1, Singh, J. T.1,5 |
| المصدر: |
Physical Review Letters. 6/12/2015, Vol. 114 Issue 23, p233002-1-233002-5. 5p. |
| مصطلحات موضوعية: |
*RADIUM, *ELECTRIC dipole moments, *NUCLEAR deformation, *ATOMIC mass, *STANDARD model (Nuclear physics), *DIAMAGNETIC materials, *NUCLEAR structure |
| مستخلص: |
The radioactive radium-225 (225Ra) atom is a favorable case to search for a permanent electric dipole moment. Because of its strong nuclear octupole deformation and large atomic mass, 225Ra is particularly sensitive to interactions in the nuclear medium that violate both time-reversal symmetry and parity. We have developed a cold-atom technique to study the spin precession of 225Ra atoms held in an optical dipole trap, and demonstrated the principle of this method by completing the first measurement of its atomic electric dipole moment, reaching an upper limit of ∣d(225Ra)∣ <50 × 10-22 e cm (95% confidence). [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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