HIC for FAIR logo Nuclear Physics Colloquium

Institute for Theoretical Physics, Physics Building, Seminar Room PHYS 2.116
Time: Thursday, July 02, 4:30-5:30 pm (s.t.) (plus 10min for discussion)
Contact: hees@fias.uni-frankfurt.de


Neutron Dripline for Magnesium and Magnesium-$\Lambda$ hypernuclei

Chhanda Samanta (Virigina Military Institute)

Nuclear driplines are limits for nuclear particle-stability. The nuclear physics of extremely neutron-rich matter has led to the discovery of halo nuclei, the island of inversion, appearance of new magic numbers and disappearance of some well-known magic numbers in certain nuclei. In nuclear astrophysics the neutron-drip lines are limiting boundaries for explosive nucleosynthesis in which large fluxes of high energy neutrons can be captured by seed nuclei.

If a Lambda ($\Lambda$)-hyperon is added to a nucleus, it opens up an additional degree of freedom. Such hypernuclei containing $\Lambda$-hyperons are of current interest in nuclear as well as astrophysics. The recent measurements of the mass of neutron-rich Magnesium nuclei show extra stability approaching the neutron drip line. The possible drip point for Magnesium is investigated in a microscopic framework using the Frankfurt chiral effective model. Results of this calculation and the effect of addition of a $\Lambda$-hyperon on the neutron-dripline of a Magnesium nucleus will be presented.



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