scholarly journals Observation of the 87Rb 5S1/2 to 4D3/2 electric quadrupole transition at 516.6 nm mediated via an optical nanofibre

2020 ◽  
Vol 22 (6) ◽  
pp. 062001 ◽  
Author(s):  
Tridib Ray ◽  
Ratnesh K Gupta ◽  
Vandna Gokhroo ◽  
Jesse L Everett ◽  
Thomas Nieddu ◽  
...  
Keyword(s):  
Electric Quadrupole ◽  
Quadrupole Transition ◽  
Electric Quadrupole Transition

scholarly journals Isomers and shell evolution in neutron-rich nuclei below the doubly magic nucleus 132Sn

2018 ◽  
Vol 178 ◽  
pp. 02018
Author(s):  
Hiroshi Watanabe
Keyword(s):  
Half Life ◽  
Electric Quadrupole ◽  
Energy Difference ◽  
Magic Nucleus ◽  
Spherical Nucleus ◽  
Shell Closure ◽  
Quadrupole Transition ◽  
Electric Quadrupole Transition ◽  
Level Sequence ◽  
First Time

The level structures of the very neutron-rich nuclei 128Pd82 and 126Pd80 have been investigated for the first time. A new isomer with a half-life of 5.8(8) μs in 128Pd is proposed to have a spin and parity of 8+ and is associated with a maximally aligned configuration arising from the g9/2Pd proton subshell with seniority υ = 2. The level sequence below the 8+ isomer is similar to that in the N = 82 isotone 130Cd, but the electric quadrupole transition that depopulates the 8+ isomer is more hindered in 128Pd than in 130Cd, as expected in the seniority scheme for a semi-magic, spherical nucleus. For 126Pd, three new isomers with Jπ = (5-), (7-), and (10+) have been identified with half-lives of 0.33(4) μs, 0.44(3) μs, and 23.0(8) ms, respectively. The smaller energy difference between the 10+ and 7- isomers in 126Pd than in the heavier N = 80 isotones can be interpreted as being ascribed to the monopole shift of the h11/2 neutron orbit. The nature of the N = 82 shell closure scrutinized with these characteristic isomers is discussed.

Frequency Measurement of the Electric Quadrupole Transition in a Single Laser-Cooled 40 Ca +

2011 ◽  
Vol 28 (1) ◽  
pp. 013201 ◽  
Author(s):  
Qu Liu ◽  
Yao Huang ◽  
Jian Cao ◽  
Bao-Quan Ou ◽  
Bin Guo ◽  
...  
Keyword(s):  
Electric Quadrupole ◽  
Frequency Measurement ◽  
Quadrupole Transition ◽  
Electric Quadrupole Transition ◽  
Single Laser

Study of antimagnetic rotation in 109,111Cd

2018 ◽  
Vol 27 (04) ◽  
pp. 1850034 ◽  
Author(s):  
C. Majumder ◽  
H. P. Sharma ◽  
S. Chakraborty ◽  
S. S. Tiwary
Keyword(s):  
Electric Quadrupole ◽  
Negative Parity ◽  
Spin States ◽  
Transition Rates ◽  
Quadrupole Transition ◽  
Semiclassical Model ◽  
Electric Quadrupole Transition ◽  
Higher Spin ◽  
Antimagnetic Rotation ◽  
Dynamic Moment

The reduced electric quadrupole transition rates have been calculated for the states of the negative parity bands in [Formula: see text]Cd nuclei using semiclassical model (SCM). The calculated transition rates are found to be decreasing with increasing spin for the states above [Formula: see text] and the dynamic moment of inertia [Formula: see text] of the higher spin states are found to be almost constant. The calculated B(E2) values show better agreement with the experimental B(E2) values for [Formula: see text]Cd. The results for both [Formula: see text]Cd and [Formula: see text]Cd nuclei show a very rapidly increasing value of the [Formula: see text] ratio with increasing spin, suggesting the antimagnetic rotational character of the states lying above the spins [Formula: see text] and [Formula: see text], respectively.

Exactly separable Bohr Hamiltonian with the Morse potential for triaxial nuclei

2014 ◽  
Vol 23 (10) ◽  
pp. 1450053 ◽  
Author(s):  
I. Inci
Keyword(s):  
Experimental Data ◽  
Closed Form ◽  
Morse Potential ◽  
Electric Quadrupole ◽  
Quadrupole Transition ◽  
Eigenvalues And Eigenfunctions ◽  
Energy Eigenvalues ◽  
Electric Quadrupole Transition ◽  
Energy Eigenvalues And Eigenfunctions

In this paper, the Morse potential is used in the β-part of the collective Bohr Hamiltonian for triaxial nuclei. Energy eigenvalues and eigenfunctions are obtained in a closed form through exactly separating the Hamiltonian into its variables by using an appropriate form of the potential. The results are applied to generate the nuclear spectrum of 192 Pt , 194 Pt and 196 Pt isotopes which are known to be the best candidate exhibiting triaxiality. Electric quadrupole transition ratios are calculated and then compared with the experimental data and the Z(5) model results.

scholarly journals ${\rm B(E2)}\uparrow (0_{1}^{+} \rightarrow 2_{1}^{+})$ predictions for even–even nuclei in the differential equation model

2015 ◽  
Vol 24 (02) ◽  
pp. 1550011 ◽  
Author(s):  
R. C. Nayak ◽  
S. Pattnaik
Keyword(s):  
Differential Equation ◽  
Transition Probability ◽  
Electric Quadrupole ◽  
Equation Model ◽  
Quadrupole Transition ◽  
Differential Equation Model ◽  
Recursion Relations ◽  
Electric Quadrupole Transition ◽  
Wide Range

We use the recently developed differential equation model (DEM) for the reduced electric quadrupole transition probability B(E2)↑ for the transition from the ground to the first 2+ state for predicting its values for a wide range of even–even nuclides almost throughout the nuclear landscape from Neon to Californium. This is made possible as the principal equation in the model, namely, the differential equation connecting the B(E2)↑ value of a given even–even nucleus with its derivatives with respect to the neutron and proton numbers, provides two different recursion relations, each connecting three different neighboring even–even nuclei from lower- to higher-mass numbers and vice versa. These relations are primarily responsible in extrapolating from known to unknown terrain of the B(E2)↑-landscape and thereby facilitate the predictions throughout. As a result, we have succeeded in predicting its hitherto unknown value for the adjacent 251 isotopes lying on either side of the known B(E2)↑ database.

Sign in / Sign up

Export Citation Format

Share Document