Evidence for the isoscalar giant dipole resonance in Pb-208 using inelastic alpha scattering at and near 0 degrees
Evidence for the isoscalar giant dipole resonance in Pb-208 using inelastic alpha scattering at and near 0 degrees
复制标题
使用 0 度及附近的非弹性 α 散射证明 Pb-208 中等标量巨偶极子共振的证据
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
J. Lisantti
中科院分区：
文献类型：
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作者：
B. F. Davis;U. Garg;W. Reviol;M. Harakeh;A. Bacher;G. Berg;C. Foster;E. Stephenson;Y. Wang;J. Jänecke;K. Pham;D. Roberts;H. Akimune;M. Fujiwara;J. Lisantti
用200 MeV α粒子在0度及附近的非弹性散射研究了Pb-208中的等oscillator巨偶极共振（ISGDR），其中ISGDR的角分布可以与其它模式的角分布明显区分。采用“光谱差分”技术将ISGDR与高能八极共振（HEOR）分离。这些数据为ISGDR与HEOR相邻提供了最可靠的证据。利用这些结果，已经确定了Pb-208中所有预期的小于或等于3个共振的等示波器λ。
The isoscalar giant dipole resonance (ISGDR) in Pb-208 has been investigated using inelastic scattering of 200 MeV alpha particles at and near 0 degrees where the angular distribution of the ISGDR can be clearly differentiated from those of other modes. The 'difference of spectra' technique was employed to separate the ISGDR from the high-energy octupole resonance (HEOR). These data provide the dearest evidence yet for the ISGDR adjacent to the HEOR. With these results, all expected isoscalar lambda less than or equal to 3 resonances in Pb-208 have been identified.