skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

This content will become publicly available on March 27, 2020

Title: A new concept for searching for time-reversal symmetry violation using Pa-229 ions trapped in optical crystals

Abstract

Certain pear-shaped nuclei are expected to have enhanced sensitivity to time-reversal and parity-violating interactions originating within the nuclear medium. In particular, Protactinium-229 is thought to be about 100,000 times more sensitive than Mercury-199 which currently sets some of the most stringent limits for these types of interactions. Several challenges would first have to be addressed in order to take advantage of this discovery potential. First, there is not currently a significant source of Pa-229 (1.5 day half-life); however, there are plans to harvest Pa-229 at the Facility for Rare Isotope Beams at Michigan State University. Second, the spin-5/2 nucleus of Pa-229 limits its coherence time while also making it sensitive to systematic effects related to local electric field gradients. On the other hand, this also give Pa-229 an additional source of signal in the form of a magnetic quadrupole moment (MQM) which violates the same symmetries as an EDM but is not observable in spin-1/2 systems. Third, in order to compensate for the small atom numbers and short coherence times, the Pa-229 atoms would have to be probed with exceptionally large electric and magnetic fields that may be possible if Pa-229 ions are embedded inside an optical crystal. We willmore » describe some aspects of this concept using the stable Praseodymium-141 isotope as a surrogate which has the same nuclear spin and similar atomic structure of Pa-229.« less

Authors:
ORCiD logo [1]
  1. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.
Publication Date:
Research Org.:
Michigan State Univ., East Lansing, MI (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1531163
Grant/Contract Number:  
SC0019015
Resource Type:
Accepted Manuscript
Journal Name:
Hyperfine Interactions
Additional Journal Information:
Journal Volume: 240; Journal Issue: 1; Conference: This article is part of the Topical Collection on Proceedings of the 7th International Conference on Trapped Charged Particles and Fundamental Physics (TCP 2018), Traverse City, Michigan, USA, 30 September-5 October 2018; Journal ID: ISSN 0304-3843
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Singh, Jaideep Taggart. A new concept for searching for time-reversal symmetry violation using Pa-229 ions trapped in optical crystals. United States: N. p., 2019. Web. doi:10.1007/s10751-019-1573-z.
Singh, Jaideep Taggart. A new concept for searching for time-reversal symmetry violation using Pa-229 ions trapped in optical crystals. United States. doi:10.1007/s10751-019-1573-z.
Singh, Jaideep Taggart. Wed . "A new concept for searching for time-reversal symmetry violation using Pa-229 ions trapped in optical crystals". United States. doi:10.1007/s10751-019-1573-z.
@article{osti_1531163,
title = {A new concept for searching for time-reversal symmetry violation using Pa-229 ions trapped in optical crystals},
author = {Singh, Jaideep Taggart},
abstractNote = {Certain pear-shaped nuclei are expected to have enhanced sensitivity to time-reversal and parity-violating interactions originating within the nuclear medium. In particular, Protactinium-229 is thought to be about 100,000 times more sensitive than Mercury-199 which currently sets some of the most stringent limits for these types of interactions. Several challenges would first have to be addressed in order to take advantage of this discovery potential. First, there is not currently a significant source of Pa-229 (1.5 day half-life); however, there are plans to harvest Pa-229 at the Facility for Rare Isotope Beams at Michigan State University. Second, the spin-5/2 nucleus of Pa-229 limits its coherence time while also making it sensitive to systematic effects related to local electric field gradients. On the other hand, this also give Pa-229 an additional source of signal in the form of a magnetic quadrupole moment (MQM) which violates the same symmetries as an EDM but is not observable in spin-1/2 systems. Third, in order to compensate for the small atom numbers and short coherence times, the Pa-229 atoms would have to be probed with exceptionally large electric and magnetic fields that may be possible if Pa-229 ions are embedded inside an optical crystal. We will describe some aspects of this concept using the stable Praseodymium-141 isotope as a surrogate which has the same nuclear spin and similar atomic structure of Pa-229.},
doi = {10.1007/s10751-019-1573-z},
journal = {Hyperfine Interactions},
number = 1,
volume = 240,
place = {United States},
year = {2019},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on March 27, 2020
Publisher's Version of Record

Save / Share:

Works referenced in this record:

An Ion Funnel Interface for Improved Ion Focusing and Sensitivity Using Electrospray Ionization Mass Spectrometry
journal, October 1998

  • Shaffer, Scott A.; Prior, David C.; Anderson, Gordon A.
  • Analytical Chemistry, Vol. 70, Issue 19, p. 4111-4119
  • DOI: 10.1021/ac9802170

Improving mass spectrometer sensitivity using a high-pressure electrodynamic ion funnel interface
journal, September 2006

  • Ibrahim, Yehia; Tang, Keqi; Tolmachev, Aleksey V.
  • Journal of the American Society for Mass Spectrometry, Vol. 17, Issue 9, p. 1299-1305
  • DOI: 10.1016/j.jasms.2006.06.005