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SUMMARY:The N=126 factory at Argonne National Laboratory
DTSTART;VALUE=DATE-TIME:20190719T140000Z
DTEND;VALUE=DATE-TIME:20190719T143000Z
DTSTAMP;VALUE=DATE-TIME:20260305T134216Z
UID:indico-contribution-919@nyx.physics.mcgill.ca
DESCRIPTION:Speakers: Adrian A. Valverde (Argonne National Laboratory)\nTh
 e properties of nuclei near the neutron $N=126$ shell are critical to the 
 understanding of the production of elements via the astrophysical $r$-proc
 ess pathway\, particularly for the $A\\sim195$ abundance peak [1]. Unfortu
 nately traditional particle-fragmentation\, target-fragmentation\, or fiss
 ion production techniques do not efficiently produce these nuclei. Multi-n
 ucleon transfer (MNT) reactions between two heavy ions\, however\, can eff
 iciently produce these nuclei [2]. The $N=126$ factory currently under con
 struction at Argonne National Laboratory's ATLAS facility will make use of
  these reactions to allow for the study of these nuclei [3]. Because of th
 e difficulty collecting MNT reaction products\, this new facility will use
  a large-volume gas catcher\, similar to the one currently in use at CARIB
 U\, to convert these reaction products into a low energy beam that will in
 itially be mass separated with a magnetic dipole of resolving power $R\\si
 m10^3$. Subsequently\, the beam will pass through an RFQ cooler-buncher an
 d MR-TOF system to provide high mass resolving power ($R\\sim10^5$) suffic
 ient to suppress isobaric contaminants. The isotopically separated\, bunch
 ed low-energy beams will then be available downstream for measurements suc
 h as mass measurements using the CPT mass spectrometer or decay studies. T
 he status of the facility under construction will be presented\, together 
 with commissioning results of the component devices. This work was support
 ed in part by the U.S. Department of Energy\, Office of Nuclear Physics\, 
 under Contract No. DE-AC02-06CH11357\; by NSERC (Canada)\, Application No.
  SAPPJ-2018-00028\; by the National Science Foundation under Grant No. PHY
 -1713857\; by the University of Notre Dame\; and used resources of ANL’s
  ATLAS facility\, an Office of Science User Facility.\n\n[1] M. Arnould\, 
 S. Goriely\, and K. Takahashi\, Phys. Rep. **450**\, 97 (2007) \n[2] V. Za
 grebaev and W. Greiner\, Phys. Rev. Lett. **101**\, 122701 (2008)\n[3] G. 
 Savard\, M. Brodeur\, J.A. Clark and A.A. Valverde\, Nucl. Instr.\nMeth. P
 hys. Res. B Proceedings of EMIS-2018 (in press)\n\nhttps://nyx.physics.mcg
 ill.ca/event/149/contributions/919/
LOCATION:McGill University Ball Room
URL:https://nyx.physics.mcgill.ca/event/149/contributions/919/
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