具有旋转能级的均匀激发核的中子捕获伽马射线谱

Journal of Nuclear Energy (1954) Pub Date : 1959-06-01 DOI:10.1016/0891-3919(59)90139-0

L.V. Groshev, A.M. Demidov, V.N. Lutsenko, V.I. Pelekhov

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引用次数: 8

摘要

用磁性康普顿电子能谱仪测量了Gd、Er、Hf、Dy和Ta在0.3 - 9mev范围内的热中子捕获γ射线能谱。其中前三个元素的激发核分别为64156Gd94、68168Gd94、68168Er100和72178Hf106，它们的旋转能级接近基态;在它们的光谱中，在1 MeV附近发现了一组紧密间隔的强谱线，这是偶奇(如66165Dy99)和奇奇(如73182Ta109)发射体光谱中所没有的。这些直线的性质是。与低洼地区有关的

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Neutron-capture gamma-ray spectra from even-even excited nuclei with rotational levels

Thermal-neutron capture γ-ray spectra from Gd, Er, Hf, Dy and Ta have been measured over the range 0·3–9 MeV by use of a magnetic Compton-electron spectrometer. With the first three of these elements, the excited nuclei are ₆₄¹⁵⁶Gd₉₄, ₆₈¹⁶⁸Gd₉₄, ₆₈¹⁶⁸Er₁₀₀ and ₇₂¹⁷⁸Hf₁₀₆, which have rotational levels near the ground state; in their spectra a closely spaced group of intense lines is found near 1 MeV that is absent from the spectra of even-odd (e.g. ₆₆¹⁶⁵Dy₉₉) and odd-odd (e.g. ₇₃¹⁸²Ta₁₀₉) emitters. The properties of these lines are. related to those of the low-lying levels.

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Journal of Nuclear Energy (1954)

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