New high-spin structure and possible chirality in In109

Abstract

High-spin structure of 109 In has been investigated with the 100 Mo( 14 N, 5n) 109 In reaction at a beam energy of 78 MeV using the in-beam γ spectroscopic method. The level scheme of 109 In has been modified considerably and extended by 46 new γ-rays to the highest excited state at 8.979 MeV and J π =(45/2 + ). The new level scheme consists of eight bands, six of which are identified as dipole bands. The configurations have been tentatively assigned with the help of the systematics of neighboring odd-A indium isotopes and the experimental aligned angular momenta. The dipole bands are then compared with the titled axis cranking calculation in the framework of covariant density function theory (TAC-CDFT). The results of theoretical calculation based on the configurations, which involve one proton hole at the g 9/2 orbital and two or four unpaired neutrons at g 7/2 , d 5/2 and h 11/2 orbitals, show that the shape of 109 In undergoes an evolution on both β and γ deformations and possible chirality is suggested in 109 In. ever, chirality in the indium isotopes has not been reported. J Config 1 J core J J x ( ) 0.30 MeV 0.65 MeV J Config 2 J core J J x ( ) 0.20 MeV 0.70 MeV J Config 3 FIG. 9: (Color online) The proton, neutron and core angular momentum vectors (Jπ, Jν and Jcore ) for Config 1-3 in 109 In at both the minimum and the maximum rotational frequencies in the TAC-RMF calculations.

Nucleon and Δ resonances in γp→K+Σ0(1385Wang1, Wang2, Huang3 2020Phys. Rev. D

“…g (2) Σ * N K * and g (3) Σ * N K * , cannot be determined via flavor SU(3) symmetry, and we ignore these two terms in the present work, following Refs. [20][21][22][23].…”

“…Following Refs. [21,22], for intermediate [12]. The resonance mass MR and width ΓR are fixed to be the values estimated by PDG, with the numbers in brackets below MR and ΓR representing the range of the corresponding quantities given by PDG [12].…”

The $$\varDelta I=2$$ bands in $$^{109}\hbox {In}$$: possible antimagnetic rotation

“…6 The DCO of the 888.2 keV transition needs special explanation. In our early work [29], the 888.2 keV transition is thought to be an E2 transition and belong to band 7. Nevertheless, the DCO of the 888.2-keV transition is 0.78 (17), which is not a strict proof for an E2 transition.…”

“…Compared with the results reported in Ref. [29], the level scheme of 109 In has been revised by adding eleven new γ rays.…”

Nucleon resonances in γp→ωp reaction

“…These efforts are not restricted to the non-strangeness sector only. There has been also an intense activity in the strangeness sector to search for hyperon resonances with strangeness quantum number S = −1 via KY photoproduction (Y = Λ, Σ) and interest in heavier meson photoproduction such as K * Y is also increasing [3][4][5][6][7][8]. There are also initiatives to inves- * huangfei@ucas.ac.cn † nakayama@uga.edu ‡ lidm@zzu.edu.cn tigate strange baryon resonances with S = −2 and −3 [9,10].…”