小型化穆斯堡尔谱仪换能器的研制  

Development of a mini-transducer for Mssbauer spectroscopy

作　　者：朱静波[1] 厉淑贞[1] 陈楠[1] 张源[1] 夏元复[1] 

机构地区：[1]南京大学物理系,南京210093

出　　处：《核技术》2008年第8期600-602,共3页Nuclear Techniques

摘　　要：换能器磁钢采用新型的稀土磁性材料SmCo5替代传统的AlNiCo5。换能器直径67.5mm,长113.5mm,总重1.36kg。室温下,差误信号与参考信号的峰-峰值之比小于0.4%;测量所得的25μmα-Fe薄膜的穆斯堡尔谱的内双线线宽优于0.23mm/s。换能器能够长时间稳定地测量穆斯堡尔谱,达到了设计精度的要求。A mini-transducer for Mossbauer is described in this paper. The mini-transducer uses SmCo5 magnets instead of AlNiCos. The mini-transducer is featured by its weight （1360 g） and size （Ф67.5 mm×113.5 mm）. The ratio between error signal value and the velocity signal（peak-to-peak） is lower than 0.4%. At room temperature, the average Mossbauer line width of the inner lines of a 25 μm α-Fe foil is less than 0.23 mm/s. The transducer can be used to measure Mossbauer spectrum with long-time stability.

关 键 词：小型化穆斯堡尔谱仪 换能器 

分 类 号：O571.23[理学—粒子物理与原子核物理] TL817.9[理学—物理]