Reduced Transition Probabilities or B(E2; 0+ → 2+) Values
Recent data on electric quadrupole transition probabilities or B(E2; 0+ → 2+) values.
For additional information work of S. Raman, C.W. Nestor and P. Tikkanen
"Transition Probability from the Ground to the First-Excited 2+ State of Even-Even Nuclides",
Atomic Data and Nuclear Data Tables, 78, Number 1, May 2001, 1 is highly recommended.
Explanation of Tables:
| Nuclide | The even Z, even N nuclide studied |
| Transition Energy | Energy of the first excited 2+ state in keV |
| Transition Rate Ratio | B(↑) = (2J + 1)B(↓)/(2J0+1), where J0 and J are spins of the lower and upper levels, respectively. |
| B(E2; 0+ → 2+) | Reduced electric quadrupole transition rate for the ground state to 2+ state transition in units of e2b2 |
| W.U. | Weisskopf units are based on single-particle estimate for the λ-th multipole reduced electric transition probability and originally have been used for transitions from higher to lower states:
Bw(Eλ)=(1/4π)(3/(λ+3))2(1.2)2λA2λ/3 e2fm2λ |
| | Weisskopf (single-particle) B(E2) value for 0+→2+ transition is given by:
Bw(E2↑)=0.297xA4/3 e2fm4 |
| τ | Mean lifetime of the state in ps
τ = 40.81 x 1013E-5[B(E2↑)/e2b2]-1(1 + α)-1
|
| β | Deformation parameter
β = (4π/3ZR02)[B(E2↑)/e2]1/2, where
R02 = (1.2 x 10-13 A1/3 cm)2 = 0.0144A2/3b
|
| Q0 | Intrinsic quadrupole moment in b
Q0 = [16πB(E2↑)/5e2]1/2 |
| Reference | Nuclear Science References Database Abstract |
| Global Best Fit | Global Best Fit for B(E2)↑ by S. Raman, C.W. Nestor and P. Tikkanen |
| Modified Grodzins rule | B(E2↑) = (2.57±0.45)E-1Z2A-2/3
β = (466±41)E-1/2A-1 |
| null | No data available |
Web and Programming: Boris Pritychenko, NNDC, Brookhaven National Laboratory
Data Source: Data are compiled by Boris Pritychenko, NNDC, Brookhaven National Laboratory
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