1 / 10

Photodisintegration of the Triton: A Probe of the Neutron-Neutron Interaction

Photodisintegration of the Triton: A Probe of the Neutron-Neutron Interaction. Triangle Universities Nuclear Laboratory (TUNL). NC Central University. M.W. Ahmed B.J. Crowe III D.M. Markoff. Jagellonian University. H. Witala. =0.

violet
Download Presentation

Photodisintegration of the Triton: A Probe of the Neutron-Neutron Interaction

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Photodisintegration of the Triton: A Probe of the Neutron-Neutron Interaction Triangle Universities Nuclear Laboratory (TUNL) NC Central University M.W. Ahmed B.J. Crowe III D.M. Markoff Jagellonian University H. Witala HIGS2 WS

  2. =0 Measurement of 1S0 nn-Scattering Length NN = ¼ s + ¾ t nn = ¼ s + ¾ t = ¼ s HIGS2 WS

  3. The neutron-neutron 1S0 Scattering Length CD Bonn (l=1.0) ann = -18.8 fm reff = 2.82 fm H. Witala and W. Glockle, PRC 83, 034004 (2011). • Highly sensitive to the nn potential strength 2. Limits CSB r0-w mixing G. A. Miller, B. M. K. Nefkens, and I. Slaus, Phys. Rep. 194, 1 (1990) HIGS2 WS

  4. Determinations of the 1S0 annUsing p- + d  n + n + g • p- + d  n + n + g • ann = -18.5 ± 0.4 ± 0.3 fmC.R. Howell et al., Phys. Lett. B 444, 252 (1998) • ann = -18.6 ± 0.4 ± 0.3 fmQ. Chen et al., Phys. Rev. C 77, 054002 (2008) • ann = -18.6 ± 0.4 ± 0.3 fm B. Gabioud et al., Phys. Lett. B 103, 9 (1981) • ann = -18.7 ± 0.6 ± 0.3 fm O. Schori et al., Phys. Rev. C 35, 2252 (1987) • Average: ann = -18.6 ± 0.3 ± 0.3 fm • (corrected for MMI) Investigation of reducing theoretical error A. Gardestig and D.R. Phillips, Phys. Rev. C 73, 014002 (2006) Constrains value of ann with EFT: J. Kirscher and D.R. Phillips, arXiv;nucl-th, 1106.3171v1 HIGS2 WS

  5. Results from Kinematically Complete nd Breakup Measurements |Dann| = 2.5 ± 0.8 fm 3 SD difference HIGS2 WS

  6. nd breakup: nn QFSfrom: H. Witała and W. Glöckle, Phys. Rev. C 83, 034004 (2011) nn QFS cross section at En=25 MeV Data: measured at CIAE X.C. Ruan et al., Phys. Rev. C 75, 057001 (2007). Calculations: CD-Bonn NN potential nn QFS cross section at En=26 MeV Data: measured at Univ. Bonn A. Siepe et al., Phys. Rev. C 65, 034010 (2002). Calculations: CD-Bonn NN potential HIGS2 WS

  7. nn interaction strength and dineutron binding from: H. Witała and W. Glöckle, Phys. Rev. C 83, 034004 (2011) HIGS2 WS

  8. 3H 3-body photodisintegration 3H + g p + n + n The total cross section for three-body photodisintegration of 3H. This figure is taken from the thesis of R. Skibinski. The data are from Faul et al, Phys. Rev. C 24, 849 (1981). . The calculations are by R. Skibinski The MECs are treated using the Siegert theorem. HIGS2 WS

  9. Photodisintegration of 3H HIGS2 WS

  10. 3H gas targets Experiment setup for 3H photodisintegration wire chambers 80 cm g-ray beam silicon detectors HIGS2 WS

More Related