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Are There Good Probes for the Di-Neutron Correlation in Light Neutron-Rich Nuclei?

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Abstract

The di-neutron correlation is a spatial correlation with which two valence neutrons are located at a similar position inside a nucleus. We discuss possible experimental probes for the di-neutron correlation. This includes the Coulomb breakup and the pair transfer reactions of neutron-rich nuclei, and the direct two-neutron decays of nuclei beyond the neutron drip-line.

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References

  1. Ring P., Schuck P.: The Nuclear Many Body Problem. Springer, New York (1980)

    Book  Google Scholar 

  2. Brink D.M., Broglia R.A.: Nuclear Superfluidity: Pairing in Finite Systems. Cambridge University Press, Cambridge (2005)

    Book  MATH  Google Scholar 

  3. Bertsch G.F., Broglia R.A., Riedel C.: Qualitative description of nuclear collectivity. Nucl. Phys. A 91, 123–132 (1967)

    Article  ADS  Google Scholar 

  4. Migdal A.B.: 2 interacting particles in a potential well. Soviet J. of Nucl. Phys. 16, 238–241 (1973)

    Google Scholar 

  5. Catara F., Insolia A., Maglione E., Vitturi A.: Relation between pairing correlations and two-particle space correlations. Phys. Rev. C 28, 1091–1094 (1984)

    Article  ADS  Google Scholar 

  6. Hagino K., Tanihata I., Sagawa H.: Exotic nuclei far from the stability line. In: Henley, E.M., Ellis, S.D. (eds.) 100 Years of Subatomic Physics, pp. 231–272. World Scientific, Singapore (2013)

    Chapter  Google Scholar 

  7. Sagawa H., Hagino K.: Theoretical models for exotic nuclei. Eur. Phys. J. A 51, 102 (2015)

    Article  ADS  Google Scholar 

  8. Bertsch G.F., Esbensen H.: Pair correlations near the neutron drip line. Ann. Phys. (N.Y.) 209, 327–363 (1991)

    Article  ADS  Google Scholar 

  9. Zhukov M.V., Danilin B.V., Fedorov D.V., Bang J.M., Thompson I.J., Vaagen J.S.: Bound-state properties of Borromean halo nuclei: 6He and 11Li. Phys. Rep. 231, 151–199 (1993)

    Article  ADS  Google Scholar 

  10. Barranco F., Bortignon P.F., Broglia R.A., Colo G., Vigezzi E.: The halo of the exotic nucleus 11Li: a single Cooper pair. Eur. Phys. J. A 11, 385–392 (2001)

    Article  ADS  Google Scholar 

  11. Hagino K., Sagawa H.: Pairing correlations in nuclei on the neutron-drip line. Phys. Rev. C 72, 044321 (2005)

    Article  ADS  Google Scholar 

  12. Hagino K., Sagawa H., Carbonell J., Schuck P.: Coexistence of BCS- and BEC-like pair structures in halo nuclei. Phys. Rev. Lett. 99, 022506 (2007)

    Article  ADS  Google Scholar 

  13. Kikuchi Y., Kato K., Myo T., Takashina M., Ikeda K.: Two-neutron correlations in 6He in a Coulomb breakup reaction. Phys. Rev. C 81, 044308 (2010)

    Article  ADS  Google Scholar 

  14. Matsuo M., Mizuyama K., Serizawa Y.: Di-neutron correlation and soft dipole excitations in medium mass neutron-rich nuclei near drip line. Phys. Rev. C 71, 064326 (2005)

    Article  ADS  Google Scholar 

  15. Pillet N., Sandulescu N., Schuck P.: Generic strong coupling behavior of Cooper pairs on the surface of superfluid nuclei. Phys. Rev. C 76, 024310 (2007)

    Article  ADS  Google Scholar 

  16. Matsuo M.: Spatial structure of neutron Cooper pair in low density uniform matter. Phys. Rev. C 73, 044309 (2006)

    Article  ADS  Google Scholar 

  17. Oishi T., Hagino K., Sagawa H.: Di-proton correlation in the proton-rich Borromean nucleus 17Ne. Phys. Rev. C 82, 024315 (2010)

    Article  ADS  Google Scholar 

  18. Nakamura T. et al.: Observation of strong low-lying E1 strength in the two-neutron halo nucleus 11Li. Phys. Rev. Lett. 96, 252502 (2006)

    Article  ADS  Google Scholar 

  19. Aumann T. et al.: Continuum excitations in 6He. Phys. Rev. C 59, 1252 (1999)

    Article  ADS  Google Scholar 

  20. Esbensen H., Hagino K., Mueller P., Sagawa H.: Charge radius and dipole response of 11Li. Phys. Rev. C 76, 024302 (2007)

    Article  ADS  Google Scholar 

  21. Teruya N., Bertulani C.A., Krewald S., Dias H., Hussein M.S.: Hybrid random-phase-approximation—cluster model for the dipole strength function of 11Li. Phys. Rev. C 43, R2049 (1991)

    Article  ADS  Google Scholar 

  22. Esbensen H., Bertsch G.F.: Soft dipole excitations in 11Li. Nucl. Phys. A 542, 310–340 (1992)

    Article  ADS  Google Scholar 

  23. Vinh Mau N., Pacheco J.C.: Structure of the 11Li nucleus. Nucl. Phys. A 607, 163–177 (1996)

    Article  ADS  Google Scholar 

  24. Tanihata I. et al.: Measurements of interaction cross sections and nuclear radii in the light p-shell region. Phys. Rev. Lett. 55, 2676–2679 (1985)

    Article  ADS  Google Scholar 

  25. Ozawa A. et al.: Nuclear size and related topics. Nucl. Phys. A 693, 32–62 (2001)

    Article  ADS  Google Scholar 

  26. Hagino K., Sagawa H.: Dipole excitation and geometry of Borromean nuclei. Phys. Rev. C 76, 047302 (2007)

    Article  ADS  Google Scholar 

  27. Marques F.M. et al.: Two-neutron interferometry as a probe of the nuclear halo. Phys. Lett. B 476, 219–225 (2000)

    Article  ADS  Google Scholar 

  28. Bertulani C.A., Hussein M.S.: Geometry of Borromean halo nuclei. Phys. Rev. C 76, 051602(R) (2007)

    Article  ADS  Google Scholar 

  29. Yoshida S.: Note on the two-nucleon stripping reaction. Nucl. Phys. 33, 685–692 (1962)

    Article  MATH  Google Scholar 

  30. von Oertzen W., Vitturi A.: Pairing correlations of nucleons and multi-nucleon transfer between heavy nuclei. Rep. Prog. Phys. 64, 1247–1337 (2001)

    Article  ADS  Google Scholar 

  31. Potel G., Idini A., Barranco F., Vigezzi E., Broglia R.A.: Cooper pair transfer in nuclei. Rep. Prog. Phys. 76, 106301 (2013)

    Article  ADS  Google Scholar 

  32. Corradi L. et al.: Single and pair neutron transfers at sub-barrier energies. Phys. Rev. C 84, 034603 (2011)

    Article  ADS  Google Scholar 

  33. Montanari D. et al.: Neutron pair transfer in 60Ni + 116Sn far below the Coulomb barrier. Phys. Rev. Lett. 113, 052501 (2014)

    Article  ADS  Google Scholar 

  34. Insolia A., Liotta R.J., Maglione E.: 2-particle surface correlations. J. Phys. G 15, 1249–1263 (1989)

    Article  ADS  Google Scholar 

  35. Potel G., Barranco F., Marini F., Idini A., Vigezzi E., Broglia R.A.: Calculation of the transition from pairing vibration to pairing rotational regimes between magic nuclei 100Sn and 132Sn via two-nucleon transfer reactions. Phys. Rev. Lett. 107, 092501 (2011)

    Article  ADS  Google Scholar 

  36. Esbensen H., Jiang C.L., Rehm K.E.: Coupled-channels analysis of 58Ni + 124Sn reactions. Phys. Rev. C 57, 2401 (1998)

    Article  ADS  Google Scholar 

  37. Vitturi A., Sofia H.M.: Two-particle transfer and pairing correlations: interplay of reaction mechanism and structure properties. Prog. Theor. Phys. Suppl. 196, 72–86 (2012)

    Article  ADS  Google Scholar 

  38. Tanihata T. et al.: Measurement of the two-halo neutron transfer reaction 1H(11Li,9Li)3H at 3A MeV. Phys. Rev. Lett. 100, 192502 (2008)

    Article  ADS  Google Scholar 

  39. Oganessian Y.T., Zagrebaev V.I., Vaagen J.S.: “Di-neutron” configuration of 6He. Phys. Rev. Lett. 82, 4996 (1999)

    Article  ADS  Google Scholar 

  40. Raabe R. et al.: Elastic 2n-transfer in the 4He(6He,6He)4He scattering. Phys. Lett. B 458, 1 (1999)

    Article  ADS  Google Scholar 

  41. Giot L. et al.: Investigation of 6He cluster structures. Phys. Rev. C 71, 064311 (2005)

    Article  ADS  Google Scholar 

  42. Chatterjee A. et al.: 1n and 2n transfer with the Borromean nucleus 6He near the Coulomb barrier. Phys. Rev. Lett. 101, 032701 (2008)

    Article  ADS  Google Scholar 

  43. Potel G., Barranco F., Vigezzi E., Broglia R.A.: Evidence for phonon mediated pairing interaction in the halo of the nucleus 11Li. Phys. Rev. Lett. 105, 172502 (2010)

    Article  ADS  Google Scholar 

  44. Pfützner M., Karny M., Grigorenko L.V., Riisager K.: Radioactive decays at limits of nuclear stability. Rev. Mod. Phys. 84, 567–619 (2012)

    Article  ADS  Google Scholar 

  45. Golovkov M.S. et al.: The 8He and 10He spectra studied in the (t, p) reaction. Phys. Lett. B 672, 22–29 (2009)

    Article  ADS  Google Scholar 

  46. Johansson H.T. et al.: The unbound isotopes 9,10He. Nucl. Phys. A 842, 15–32 (2010)

    Article  ADS  Google Scholar 

  47. Johansson H.T. et al.: Three-body correlations in the decay of 10He and 13Li. Nucl. Phys. A 847, 66–88 (2010)

    Article  ADS  Google Scholar 

  48. Sidordhuk S.I. et al.: Structure of 10He low-lying states uncovered by correlations. Phys. Rev. Lett. 108, 202502 (2012)

    Article  ADS  Google Scholar 

  49. Kohley Z. et al.: Unresolved question of the 10He ground state resonance. Phys. Rev. Lett. 109, 232501 (2012)

    Article  ADS  Google Scholar 

  50. Spyrou A. et al.: First observation of ground state di-neutron decay: 16Be. Phys. Rev. Lett. 108, 102501 (2012)

    Article  ADS  Google Scholar 

  51. Kohley Z. et al.: First observation of the 13Li ground state. Phys. Rev. Lett. 87, 011304(R) (2013)

    ADS  Google Scholar 

  52. Lunderberg E. et al.: Evidence for the ground-state resonance of 26O. Phys. Rev. Lett. 108, 142503 (2012)

    Article  ADS  Google Scholar 

  53. Caesar C. et al.: Beyond the neutron drip line: the unbound oxygen isotopes 25O and 26O. Phys. Rev. C 88, 034313 (2013)

    Article  ADS  Google Scholar 

  54. Kondo Y., Nakamura T. et al.: Invariant-mass spectroscopy of extremely neutron-rich nuclei with SAMURAI at RIBF. JPS Conf. Proc. 6, 010006 (2015)

    Google Scholar 

  55. Kohley Z. et al.: Study of two-neutron radioactivity in the decay of 26O. Phys. Rev. Lett. 110, 152501 (2013)

    Article  ADS  Google Scholar 

  56. Hagino K., Sagawa H.: Correlated two-neutron emission in the decay of unbound nucleus 26O. Phys. Rev. C 90, 027303 (2014)

    Article  ADS  Google Scholar 

  57. Hagino K., Sagawa H.: Three-body model calculation of the 2+ state in 26O. Phys. Rev. C 90, 027303 (2014)

    Article  ADS  Google Scholar 

  58. Hoffman C.R. et al.: Determination of the N =  16 shell closure at the Oxygen drip line. Phys. Rev. Lett. 100, 152502 (2008)

    Article  ADS  Google Scholar 

  59. Grigorenko L.V., Mukha I.G., Zhukov M.V.: Lifetime and fragment correlations for the two-neutron decay of 26O ground state. Phys. Rev. Lett. 111, 042501 (2013)

    Article  ADS  Google Scholar 

  60. Kohley Z. et al.: Three-body correlations in the ground-state decay of 26O. Phys. Rev. C 91, 034323 (2015)

    Article  ADS  Google Scholar 

  61. Zürn G. et al.: Pairing in few-fermion systems with attractive interactions. Phys. Rev. Lett. 111, 175302 (2013)

    Article  ADS  Google Scholar 

  62. Lundmark R., Forssen C., Rotureau J.: Tunneling theory for tunable open quantum systems of ultracold atoms in one-dimensional traps. Phys. Rev. A 91, 041601(R) (2015)

    Article  ADS  Google Scholar 

  63. Assie M. et al.: Neutron correlations in 6He viewed through nuclear break-up. Eur. Phys. J. A 42, 441–446 (2009)

    Article  ADS  Google Scholar 

  64. Horiuchi W., Suzuki Y.: Momentum distribution and correlation of two-nucleon relative motion in 6He and 6Li. Phys. Rev. C 76, 024311 (2007)

    Article  ADS  Google Scholar 

  65. Suda, T.: Private Communications (2013)

  66. Kondo Y. et al.: Low-lying intruder state of the unbound nucleus 13Be. Phys. Lett. B 690, 245–249 (2010)

    Article  ADS  Google Scholar 

  67. Kobayashi N. et al.: One- and two-neutron removal reactions from the most neutron-rich carbon isotopes. Phys. Rev. C 86, 054604 (2012)

    Article  ADS  Google Scholar 

  68. Aksyutina Yu. et al.: Momentum profile analysis in one-neutron knockout from Borromean nuclei. Phys. Lett. B 718, 1309–1313 (2013)

    Article  ADS  Google Scholar 

  69. Uesaka, T., Sasano, M.: Private Communications (2015)

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Hagino, K., Sagawa, H. Are There Good Probes for the Di-Neutron Correlation in Light Neutron-Rich Nuclei?. Few-Body Syst 57, 185–193 (2016). https://doi.org/10.1007/s00601-015-1027-3

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