BARC/PUB/2004/0490

 
 

Compression mode resonances in 90Zr

 
     
 
Author(s)

Youngblood, D. H.; Lui, Y. W.; John, B.; and others
(NPD)

Source

Physical Review-C, 2004. Vol. 69 (5): pp. 054312.1-054312.5

ABSTRACT

The giant resonance region from 10 MeV ˂ Ex ˂ 55 MeV in 90Zr has been studied with inelastic scattering of 240 MeV α particles at small angles including 0°. The isoscalar monopole resonance was found to contain 100 ± 12% of the E0 energy weighted sum rule with a centroid of (17.81 + 0.32 − 0.20) MeV. Eighty one percent of the isoscalar E1 energy weighted sum rule was located in two peaks having Ex = (17.1 ± 0.4) and (26.7 ± 0.5) MeV, Γ = (5.4 ± 0.3) and (8.8 ± 1.0) MeV, and containing 13 ± 3% and 70 ± 10%, respectively, of the E1 energy weighted sum rule.

 
 
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