~（107）A（a，n）~（110）In~m，~（107）（a，2n）~（10

用能量为２６．８ＭｅＶ的ａ粒子轰击天然Ａｇ靶，采用迭靶技术测定了￣（１０７）Ａｇ（ａ，ｎ）￣（１１０）Ｉｎ￣ｍ，￣（１０７）Ａｇ（ａ，２ｎ）￣（１０９）Ｉｎ，￣（１０９）Ａｇ（ａ，ｐｎ）￣（１０９）Ｃｄ和￣（１０９）Ａｇ（ａ，２ｎ）￣（１１１）Ｉｎ反应的激发函数。同前人结果作了比较，并用激子模型作了理论计算。结果表明，在上述反应中存在平衡前发射反应机制。     

^176Hf（n,2n）^175Hf和^185Re（n,2n）^184Re^m,g反应截面研究

用中国原子能科学研究院ＨＩ－１３串列加速器,高压倍加器和北京大学４．５ＭＶ静电加速器分别获得能量为１０－１２,１４和１８ＭｅＶ的中子,了＾１７６Ｈｆ（ｎ,２ｎ）和＾１８５Ｒｅ（ｎ,２ｎ）的反应堆面,并与现有的实验数据作了比较,初步搞清了分歧的主要原因和激发函数的走向。     

^179Hf（n,2n）^178Hf^m2和^209Bi（n,2n）^208Bi反应截面的测量

用活化法测量相对于~(93)Nb(n,2n)~(92)Nb~m反应的~(179)Hf(n,2n)~(178)Hf~(m2)的反应截面和相对于~(27)Al(n,2n)~(24)Na反应的~(209)Bi(n,2n)~(208)Bi的反应截面。在中子能量为14.4 MeV处~(179)Hf(n,2n)~(178)Hf~(m2)反应的测量截面为(6.04±0.32)×10~(-31)m~2。在中子能量为14.6 MeV处~(209)Bi(n,2n)~(208)Bi反应的测量截面为(2279±173)×10~(31)m~2。在这些测量中,中子能量是用~(90)Zr(n,2n)~(89)Zr~(m+8)反应和~(93)Nb(n,2n)~(92)Nb~m反应的截面比法测定的。     

^204Pb（n,2n）^203Pb和^206Pb（n,α）^203Hg反应截面的测量

用活化法进行了13.50—14.81MeV中子能区~(204)Pb(n,2n)~(203)Pb和~(206)Pb(n,α)~(203)Hg反应截面的测量。用~(27)Al(n,α)~(24)Na反应作为中子注量标准。中子能量用锆、铌截面比测定。所得结果和有关文献的结果作了比较。     

^154Sm（n,2n）^153Sm和^148Sm（n,p）^148gPm反应测面的测量

报道了在Ｅｎ＝１４．５－１４．９ＭｅＶ中子能区用活化法以＾２７Ａｌ（ｎ，ａ）＾１４Ｎａ的反应截面为中子注量标准测得的＾１５４Ｓｍ（ｎ，２ｎ）＾１５３Ｓｍ和＾１４８Ｓｍ（ｎ，ｐ）＾１４８ｇＰｍ反应截面，并将其与已有的数据进行了比较，中子能量用铌锆截面比法测定。     

~(107)Ag(d,2n)~(107)Cd和~(109)Ag(d,2n)~(109)Cd反应的激发函数

用13.4MeV的氘束轰击天然银迭靶,银箔前后用铝箔作捕集减能膜。实验确定了~(107)Ag(d,2n)~(107)Cd和~(109)Ag(d,2n)~(109)Cd反应的激发函数,同时作了理论计算。由结果可见,实验值与理论值吻合得很好。     

Activation cross section measurement for ^165Ho（n,γ）^166m Ho and ^151Eu（n,γ）^152g Eu

The cross sections for ^151Eu(n,γ）152gEu reaction in the neutron energy range of 22-1100keV and the cross sections for ^165Ho(n,γ)166m Ho reaction at the neutron energies of 203.676 and 974keV are measured by activation method.The data of the neutron activation cross section at given energy ranges for ^165Ho and ^151Eu are presented for the first time.     

Measurement of ^17F（d,n）^18Ne Reaction

Explosive hydrogen burning occurs in very massive （M≥ 10^5-10^8 M） star with high temperature and density. Hot pp chain, hot CNO, hot NeNa-MgAl chain and the flowing γp and ap process will play a prominent role in hydrogen burning as. the temperature goes higher. When the temperature of the star is hither than 10^8 K. high temnerature CNO chain is dominant in hydrogen burning,     

MEASUREMENT OF EXCITATION FUNCTIONS FOR REACTIONS ~(107)Ag(α,n)~(110m)In,~(107)Ag(α,2n)~(109)In AND ~(109)Ag(α,2n)~(111)In

Nuclides ~(110)In,~(109)In and ~(111)In are useful radioisotopes,especially ~(111)In,which has suitable short—life(2.83d)for being produced by accelerator,is oneof the photon emitters most widely used for radiomedical application,mainlyfor antibody and cell labelling     

ANC方法和^12C（n,γ）^13C反应截面

本工作介绍了计算辐射俘获反应截面的一个有效方法——NC方法。利用此方法,并结合中国原子能科学研究院核物理研究所实验小组利用12C（d,p）13C反应抽取出来的ANC系数,计算了12（n,γ）13C反应截面,入射粒子n的能量范围为0～1MeV,覆盖了天体物理感兴趣的能区。在计算中,对入射粒子的入射波函数分别取平面波玻恩近似和扭曲波玻恩近似两种     

The Astrophysical ^8Li（n,γ）^9Li Reaction Rate

质质量数A≈130的轻稀土核处在从球形向大形变的过渡区，其价中子和价质子分别占据h11/2高j壳的中上部和底部轨道，产生不同γ的形状驱动力。这些过渡核的基态组态存在长椭球形变和扁椭球形变的共存，而在高自旋时出现集体运动和粒子激发之间的竞争。理论预言，随着转动频率增大呈现由软γ趋于三轴形变，发生形状变化。     

Verification Experiment of Threshold Detector 107Ag(n,n′)107mAg on “YAYOI” Standard Neutron Field

The validity of the ¹⁰⁷Ag(n, n′)^107mAg reaction for reactor neutron dosimetry has been examined through an irradiation experiment using the standard neutron field in the “YAYOI”, a fast neutron source reactor. The test foil used was 99.0% ¹⁰⁷Ag enriched silver, which was irradiated along with five reference foils already well evaluated. The reaction rate of 107Ag was determined by K X-ray counting with a high-purity Ge detector. The cross section for the ¹⁰⁷Ag(n, n′) ^107mAg reaction was compiled from the excitation cross section data of ¹⁰⁷Ag published in ENDF/B-IV, in combination with the decay scheme of ^107mAg listed in the “Table of Isotopes“. Using the neutron spectrum which had previously been precisely measured, it was found that the compiled activity of ^107mAg was underestimated by 12.8±5%. This error is attributed to significant underestimation involved in the cross section of the ¹⁰⁷Ag(n, n′)^107mAg reaction.     

利用^18O（p,n）^18F反应合成^18F—FDG

以４－（４－甲基哌啶）吡啶脸离子交换树脂吸附回旋加速器生产的＾１８Ｆ－Ｆ，在不加载体水平上进行亲核取代反应。轰击结束后经５０ｍｉｎ的合成，２－＾１８Ｆ－２－脱氧－Ｄ－葡萄糖（＾１８Ｆ－ＦＤＧ）的校正产额最高可达到５６％，ＨＰＬＣ分析表明其放化纯度大于９５％，且无菌、无热原、临床ＰＥＴ，为临床ＰＥＴ的应用提供了理想的正电子示踪剂。     

通过^19F（γ,n）^18F反应和有机氟化物制备^18F

以有机氟化物作为靶材料，通过光反应制备＾１８Ｆ。用０．０１ｍｏｌ．Ｌ＾－１ＫＯＨ水溶液提取＾１８Ｆ，因所用有机氟化物不同，水提取＾１８Ｆ收率为９％－６８％。由于辐照过程中靶物质的辐射分解，在现有条件下，实验所获得的＾１８Ｆ比活度为１０＾１２Ｂｑ（ｍｏｌ＾１９Ｆ＾－）＾－１，低于脑显影所需的＾１８Ｆ比活度。