Lowest excitations in 56Ti and the predicted N=34 shell closure.
نویسندگان
چکیده
Recent experimental characterization of the subshell closure at N=32 in the Ca, Ti, and Cr isotones has stimulated shell-model calculations that indicated the possibility that the N=34 isotones of these same elements could exhibit characteristics of a shell closure, namely, a high energy for the first excited 2(+) level. To that end, we have studied the decay of 56Sc produced in fragmentation reactions and identified new gamma rays in the daughter N=34 isotone 56Ti. The first 2(+) level is found at an energy of 1127 keV, well below the expected position that would indicate the presence of an N=34 shell closure in 56Ti.
منابع مشابه
A Continuum Shell-beam Finite Element Modeling of Buried Pipes with 90-degree Elbow Subjected to Earthquake Excitations
In the current work, the seismic analysis of bent region in buried pipes is performed, and effects of soil properties and modeling methods on pipe’s response are investigated. To do this task Beam, Beam-Shell Finite Element modeling and a Continuum shell FE models of a 90 degrees elbow are employed. In the Beam model, the pipe is simulated by beam elements while combined shell-beam elements a...
متن کاملParticle - Core Coupling around 68
The single-particle spectrum of nuclei with large neutron excess is predicted by some approaches [1] to become similar to that of a harmonic oscillator with a spin-orbit term (no additional~l2 term) and thus reinforce some of the harmonic oscillator magic numbers. This is the case of N=40, and indeed experimental results accumulating in the past few years [2,3] indicate the presence of a subshe...
متن کاملStructure of 52 , 54 Ti and shell closures in neutron - rich nuclei above 48 Ca
The level structure of 54 22Ti32 has been explored for the first time by combining β-decay measurements from fragmentation products with prompt γ -ray spectroscopy following deep inelastic reactions. The latter technique was also instrumental in tracing Ti30 to higher spin. The data provide new tests of effective interactions for full pf -shell calculations in neutron-rich nuclei above 48Ca. Th...
متن کاملInvestigating the effect of pseudo-static components on bridge structures under multiple support excitations using conditional simulated records
Long-span bridges, as vital structures, play a very important role in economic development. Furthermore, the results of several earthquake-damaged bridges showed that their seismic behavior was different from that predicted under uniform excitation and in some cases the responses were more than predicted results. Therefore, the damaged bridges under non-uniform excitations were re-analyzed and ...
متن کاملIsovector deformation and its link to the neutron shell closure
DWBA analysis of the inelastic S(p, p′) and O(p, p′) scattering data measured in the inverse kinematics has been performed to determine the isoscalar (δ0) and isovector (δ1) deformation lengths of the 2+1 excitations in the Sulfur and Oxygen isotopes using a compact folding approach. A systematic N-dependence of δ0 and δ1 has been established which shows a link between δ1 and the neutron-shell ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Physical review letters
دوره 92 7 شماره
صفحات -
تاریخ انتشار 2004