Nuclear mass is one of the fundamental quantity of atomic nucleus.The total binding energy of a nucleus derived from the related mass values reflects all the interactions among the constituting nucleons.Masses of shor...Nuclear mass is one of the fundamental quantity of atomic nucleus.The total binding energy of a nucleus derived from the related mass values reflects all the interactions among the constituting nucleons.Masses of short-lived A=2Z+3 nuclei of 112Sn projectile fragments have been measured at the experimental cooler storage ring CSRe,employing the Isochronous mass spectrometry(IMS).The experiment was conducted at the Heavy Ion Research Facility in Lanzhou at the beginning of 2016.The primary beam of 112Sn35+was accumulated in the synchrotron CSRm and accelerated to 467.91 MeV/u.Secondary beam were produced by impinging the high intensity 112Sn35+beam onto a 10 mm beryllium target which was located at the entrance of the radioactive beam line RIBLL2.The projectile fragments of 112Sn emerged from the target were then transmitted,separated in flight through RIBLL2 and finally injected into CSRe.展开更多
采用慢应变速率拉伸(SSRT)实验,结合断口形貌分析,研究了在稠油输送模拟工况下不同阴极保护电位对Q235钢和L450钢氢脆敏感性的影响。结果表明,Q235钢的氢脆敏感性高于L450钢的。随着阴极保护电位负移,Q235钢和L450钢断口形貌逐渐由韧窝...采用慢应变速率拉伸(SSRT)实验,结合断口形貌分析,研究了在稠油输送模拟工况下不同阴极保护电位对Q235钢和L450钢氢脆敏感性的影响。结果表明,Q235钢的氢脆敏感性高于L450钢的。随着阴极保护电位负移,Q235钢和L450钢断口形貌逐渐由韧窝型韧性断裂向解理断裂转变,断面收缩率和断面收缩率损失系数增大,氢脆敏感性逐渐增加。在此工况条件下,Q235钢的最大保护电位应正于-1200 m V,L450钢最大保护电位应正于-1400 m V。展开更多
研制出一款小像元10μm中心距红外焦平面探测器CMOS(complementary metal oxide semiconductor)读出电路ROIC(read out integrated circuit)。读出电路设计包括积分后读出(integration then reading,ITR)和积分同时读出(integration whi...研制出一款小像元10μm中心距红外焦平面探测器CMOS(complementary metal oxide semiconductor)读出电路ROIC(read out integrated circuit)。读出电路设计包括积分后读出(integration then reading,ITR)和积分同时读出(integration while reading,IWR)模式,ITR模式下有2档增益,电荷满阱容量分别为4.3 Me^(−)和1.6 Me^(−),其他功能包括抗晕、串口功能控制以及全芯片电注入测试功能。读出电路采用0.18μm工艺,电源电压3.3 V,测试结果表现出良好的性能:在77 K条件下,全帧频100 Hz,读出电路噪声小于0.2 mV。本文介绍了该款读出电路设计的基本架构,分析了在小的积分电容下电路抗干扰能力的设计。在测试过程中,发现了盲元拖尾现象,分析了拖尾现象产生的原因,为解决拖尾现象设计了抗晕管栅压产生电路,最后给出了整个电路的测试结果。展开更多
文摘Nuclear mass is one of the fundamental quantity of atomic nucleus.The total binding energy of a nucleus derived from the related mass values reflects all the interactions among the constituting nucleons.Masses of short-lived A=2Z+3 nuclei of 112Sn projectile fragments have been measured at the experimental cooler storage ring CSRe,employing the Isochronous mass spectrometry(IMS).The experiment was conducted at the Heavy Ion Research Facility in Lanzhou at the beginning of 2016.The primary beam of 112Sn35+was accumulated in the synchrotron CSRm and accelerated to 467.91 MeV/u.Secondary beam were produced by impinging the high intensity 112Sn35+beam onto a 10 mm beryllium target which was located at the entrance of the radioactive beam line RIBLL2.The projectile fragments of 112Sn emerged from the target were then transmitted,separated in flight through RIBLL2 and finally injected into CSRe.
文摘采用慢应变速率拉伸(SSRT)实验,结合断口形貌分析,研究了在稠油输送模拟工况下不同阴极保护电位对Q235钢和L450钢氢脆敏感性的影响。结果表明,Q235钢的氢脆敏感性高于L450钢的。随着阴极保护电位负移,Q235钢和L450钢断口形貌逐渐由韧窝型韧性断裂向解理断裂转变,断面收缩率和断面收缩率损失系数增大,氢脆敏感性逐渐增加。在此工况条件下,Q235钢的最大保护电位应正于-1200 m V,L450钢最大保护电位应正于-1400 m V。
文摘研制出一款小像元10μm中心距红外焦平面探测器CMOS(complementary metal oxide semiconductor)读出电路ROIC(read out integrated circuit)。读出电路设计包括积分后读出(integration then reading,ITR)和积分同时读出(integration while reading,IWR)模式,ITR模式下有2档增益,电荷满阱容量分别为4.3 Me^(−)和1.6 Me^(−),其他功能包括抗晕、串口功能控制以及全芯片电注入测试功能。读出电路采用0.18μm工艺,电源电压3.3 V,测试结果表现出良好的性能:在77 K条件下,全帧频100 Hz,读出电路噪声小于0.2 mV。本文介绍了该款读出电路设计的基本架构,分析了在小的积分电容下电路抗干扰能力的设计。在测试过程中,发现了盲元拖尾现象,分析了拖尾现象产生的原因,为解决拖尾现象设计了抗晕管栅压产生电路,最后给出了整个电路的测试结果。
