6533b859fe1ef96bd12b7739
RESEARCH PRODUCT
First Exploration of Neutron Shell Structure Below Lead and Beyond $\boldsymbol{N=126}$
T.l. TangB.p. KayC.r. HoffmanJ.p. SchifferD.k. SharpL.p. GaffneyS.j. FreemanM.r. MumpowerA. ArokiarajE.f. BaaderP.a. ButlerW.n. CatfordG. De AngelisF. FlavignyM.d. GottE.t. GregorJ. KonkiM. LabicheI.h. LazurusP.t. MacgregorI. MartelR.d. PageZs. PodolyákO. PoleshchukR. RaabeF. RecchiaJ.f. SmithS.v. SzwecJ. Yangsubject
Nuclear Theorynucl-thNuclear TheoryFOS: Physical sciences[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]nucl-exNuclear Theory (nucl-th)Nuclear Physics - TheoryPhysics::Accelerator PhysicsNuclear Physics - ExperimentNuclear Experiment (nucl-ex)Nuclear ExperimentNuclear ExperimentNuclear Physicsdescription
The nuclei below lead but with more than 126 neutrons are crucial to an understanding of the astrophysical $r$-process in producing nuclei heavier than $A\sim190$. Despite their importance, the structure and properties of these nuclei remain experimentally untested as they are difficult to produce in nuclear reactions with stable beams. In a first exploration of the shell structure of this region, neutron excitations in $^{207}$Hg have been probed using the neutron-adding ($d$,$p$) reaction in inverse kinematics. The radioactive beam of $^{206}$Hg was delivered to the new ISOLDE Solenoidal Spectrometer at an energy above the Coulomb barrier. The spectroscopy of $^{207}$Hg marks a first step in improving our understanding of the relevant structural properties of nuclei involved in a key part of the path of the $r$-process.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-01-03 |