共查询到20条相似文献,搜索用时 78 毫秒
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用低本底反康谱仪(HpGe–NaI)和HpGe–HpGe的三参数符合γ–γ–T系统,对72Ga的衰变γ单谱、符合谱进行了研究,实验共获得2.3×107个符合事件.根据实验结果建立了含有26个能级、87条γ射线的72Ga的衰变能级纲图,其中包含首次测到7条γ射线225.92、826.97、1349.71、1475.32、1667.91、2105.28、2247.39keV和4个能级3248.01、3396.27、3806.10、3864.56keVS并为2939.83keV能级和112.59、937.97、2402.25、2939.95keV4条γ射线的存在提供了证据;实验没有发现113.5、1155.7、1192.4keVγ射线和能级3307.1keV存在的证据。并把317.72keVγ射线的跃迁,由原来的能级3757.26keV跃迁到3439.51keV能级,改为3565.85keV到3248.01keV能级跃迁. 相似文献
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用14MeV中子轰击钍靶,通过^232Th(n,α)^229Ra反应产季了^229Ra,由放射化学分离技术从被照靶物质中分离出^229Ra活性,利用γ(X)谱学方法,首次观测到了^229Ra的能量为14.5,15.6,18.8,21.8,22.5,44.0,47.5,55.0,63.0,69.6,93.6,94.1,98.5,102.2,104.5,106.1,161.1和171.5keV的18条 相似文献
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用14MeV中子轰击Th靶,通过 ̄(232)Th(n,a)反应产生了 ̄(229)Ra,由放射化学分离技术从被照靶物质中分离出 ̄(229)Ra的活性,利用γ(X)谱学方法,首次观测到了属于 ̄(229)Ac的能量为14.5、15.6、18.8、21.8、22.5、44.0、47.5、55.0、63.0、69.6、93.6、94.1、98.5、102.2、104.5、106.1、161.1、171.5keV的18条新衰变γ射线,并建议了 ̄(229)Ra的部分衰变纲图. 相似文献
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The level structure in neutron-deficient nucleus 91Ru was investigated via the 58Ni(36Ar,2 plnγ)Ru reaction at a beam energy of 111 MeV.Charged particles,neutrons,and y-rays were emitted in this reaction and detected by the DIAMANT CsI ball,Neutron Wall,and the EXOGAM Ge clover array,respectively.In addition to the previously reported levels in 91Ru,new low-to-medium spin states were observed.Angular correlation and linear polarization measurements were performed to unambiguously determine spins and parities of the excited states in 91 Ru.The low-spin states of 91 Ru exhibit a scheme of multi-quasiparticle excitations,which is very similar to that of the neighboring N=47 isotone.These excitations have been interpreted in terms of the shell model.The calculations performed in the configuration space(p3/2,f5/2,p1/2,g9/2)reproduce the experimental excitation energies reasonably well,supporting the interpretation of the newly assigned positive-parity states in terms of the three quasiparticle configurationsπ(g9/2)^-2v(g9/2^-1 and v(g9/2)^-3. 相似文献
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丁怀博 朱胜江 J. H. Hamilton A. V. Ramayya J. K. Hwang J. O. Rasmussen C. T. Goodin I. Y. Lee 王建国 车兴来 顾龙 《中国物理 C》2009,(Z1)
Levels in the neutron-rich 109Ru have been studied by observing the prompt γ-rays following the spontaneous fission fragments of 252Cf. The ground state band and the negative parity bands have been confirmed and extended. A positive parity band with the band head level at 332.5 keV is newly identified and suggested as a single-neutron excitation band built on the 7/2+[404] Nilsson orbital. Some structural characteristics of these bands are discussed. 相似文献
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测定了12个羰基钼化合物的^95Mo NMR谱,比较了它们的化学位移,简单地讨论了Mo原子的氧化价态、相同金属之间、不同金属之间相互作用及配体取代基等因素对化学位移的影响。 相似文献
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The decay of 97Ru, 97zr and 97Nb to levels in 97Tc, 97Nb and 97Mo has been studied with Ge(Li), NaI(Tl), plastic scintillation, and Si (Li) detectors in singles and coincidence experiments. Level schemes were constructed with states in 97Te at 96.5, 215.2, 324.4, (560), 785.5, 856 and 971 keV; in 97Nb at 743.5, 1148.6, 1251.4, 1276.6, 1549.2, 1751.2, 1764.0, 1852.0, 2106.9 and 2247 keV; and in 97Mo at 656.0, 1022.0, 1274.5 and 1514 keV. From β-endpoint energies, disintegration energies of 97Zr and 97Nb were determined to be 2580 ± 50 keV and 1830 ± 50 keV, respectively. Decay scheme considerations and an upper limit to the β+/ec ratio established the disintegration energy of 97Ru to be about 1100 keV. Neither the effective-interaction method nor the pairing-correlation model accounts for the experimentally determined levels in mass-97 nuclei. 相似文献
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Fang Keming Liu Jingyi Shi Shuanghui Gu Jiahui Zeng Jiping Yu Xiaohan Shen Shuifa Li Yan 《中国物理C(英文版)》1999,23(8):820-827
1.65h 95Ru was produced and studied by y ray spectroscopy of 92Mo(a, n)reaction, 34 of the 130 obversed y rays following 95Ru decay are new. According to coincidence relations, 29 new γ rays were flited into level scheme, the placement of 7 γ rays in level scheme were confirmed, 3 new levels were assigned, a modified and expanded decay scheme was proposed. 相似文献
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《中国科学:物理学 力学 天文学(英文版)》2017,(4)
We have investigated the properties of low-lying states in ~(96)Ru within the framework of the neutron-proton interacting boson model(IBM-2), with special attention paid to the characteristics of the mixed symmetry states. By considering the relative energy of d proton boson to be different from that of neutron boson, the level energies and M1, E2 transition strengths have been calculated. The IBM-2 calculation is consistent with the experimental data of ~(96)Ru both quantitatively and qualitatively.Particularly, the strong M1 transition between the 4_2~+ and 4_1~+ states has been reproduced nicely. The calculated results show that the M1 transition strength of B(M1, 4_2~+→ 4_1+) in ~(96)Ru can be described successfully by the IBM-2. 相似文献
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Shen Shuifa Fang Keming Gu Jiahui Liu Qingcheng Xu Furong 《The European Physical Journal A - Hadrons and Nuclei》2007,32(2):149-158
The decay of 95Ru has been investigated by means of γ-ray spectroscopy. The 95Ru nuclei were produced by the reaction 92Mo( α, n) 95Ru at a beam energy of 17MeV. High-purity Ge detectors have been used singly and in coincidence to study γ-rays in the decay of 95Ru to 95Tc. 132 γ-rays are reported, among them, energies and intensities for 127 transitions have been determined. A decay scheme of 95Ru with 31 levels is proposed which accommodates 127 of these transitions. Spins and parities for three new levels are proposed
from calculated log ft values, measured γ-ray branching ratios, and in-beam experiment results of the daughter nucleus 95Tc. Combining with the high-spin states observed by in-beam γ-ray spectroscopy of previous decay works, the structure of the excited states of 95Tc is discussed in the framework of the projected shell model. 相似文献
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B. Pfeiffer G. Lhersonneau P. Dendooven A. Honkanen M. Huhta I. Klöckl M. Oinonen H. Penttilä J.R. Persson K. Peräjärvi J.C. Wang K.-L. Kratz J. Äystö 《The European Physical Journal A - Hadrons and Nuclei》1998,2(1):17-19
The β-decay of the very neutron-rich 111Tc nucleus has been observed. A partial decay scheme of 111Ru is presented, complementing the high-spin levels earlier reported in spontaneous fission work.
Received: 15 January 1998 相似文献
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掺有浅电子陷阱的AgCl微晶的光电子衰减谱的时间分辨特性 总被引:1,自引:1,他引:0
利用微波吸收技术研究了K4Ru(CN)6浅电子陷阱掺杂剂对立方体AgCl微晶光生电子时间分辨特性的影响。结果表明,掺杂剂的掺杂量以及掺杂位置对乳剂的光生电子时间分辨特性都有影响。掺杂量为245×10-5mol·(molAg)-1,掺杂位置75%Ag时自由电子的衰减最慢,寿命最长。 相似文献
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利用丝网印刷技术制备了基于Ru(bpy)23+(钌联吡啶)的印刷电极电致化学发光传感器,这种传感器具有制作简单、成本低、重现性好、对草酸盐的响应范围宽、检测限低等优点。详细研究了电极的制作方法以及发光试剂的固定化。在最优条件下,在pH 6.0的0.2 mol.L-1磷酸盐缓冲液中,利用所研制的ECL传感器测定C2O24-,线性响应范围为3.0×10-7~1.0×0-5mol.L-1,检测限为1.2×10-7mol.L-1(S/N=3)。根据同样的原理也可以用来测定其他的成分,如氨基酸,TprA(三丙胺),NAD(烟酰胺腺嘌呤二核苷酸)等物质。同时应该指出的是如果使用丝网印刷机器进行印刷的话,电极的重现性和稳定性还可以进一步提高。 相似文献