荷质比实验数据处理

1、实验：金属电子逸出功与荷质比的测定数据处理1.电子逸出功的测定表 2 (la/mA)16.025.036.049.064.081.0100.00.650151617181920200.675293133353637380.700515355586062630.7259094981011041071100.7501471541611671721771820.7752422522622702772862920.800371390表3不同406F 时 Igla-A422五的关系4344464594.05.06.07.08.09.010.01.961.181.201.231.261.281301.30

2、2.001.461.491.521.541.561.571.582.041.711.721.741.761.781.791.802.081.951.971.992.002.022.032.042.122.172.192.212.222.242.252.262.162382.402.422.432.442.462.472.202.572.592.612.632.642.652.66图1 Igla-VUa图线表 4 lg (la/T2)-1/T 的关系T(*1000k)2.202.162.122.082.042.001.96l/T(*10A-4/k)4.54.64.74.84.955.1Igla2

3、.562372.161.941.701.451.16lg(la/T2)-7.05-733-7.53-7.76-7.97-8.22-8.46图 2 lg (la/T2)-1/T 图线lg(la/T2) -1/T求出直线斜率为23041,从而求出逸出电位=4.57V与理论值 4.54V 比较：相对误差=14.57-4.541/4.54*10096=0.7%2.电子荷质比的测定表5不同阳极加速电压Ua (V)和励磁电流la (A)下的阳极电流la (|J A)5.010.015.020.025.030.00.1001291361391431471500.2001291361391431471500.

4、2501261361391431471500.2601171361391431471500.270861361391431471500.280551361391431471500.2903313613914314715003001713613914314715003106136139143147150032021361391431471500330113613914314715003400136139143147150035001361391431471500360012713914314715003700851391431471500.3800571391431471500390035139

5、1431471500.4000181391431471500.410091391431471500.420041391431471500.430011381431471500.440001251431471500.45000901431471500.46000551431471500.47000351431471500.48000201431471500.49000101431471500.5000041401471500.5100021201471500.520001811471500.530000531471500.540000331471500.550000191471500.56000

6、0101411500.57000041161500.5800002821500.5900001551500.6000000361500.6100000221480.6200000121320.630000061000.64000003710.65000001470.66000000310.67000000200.68000000100.6900000050.7000000020.710000000图3不同阳极加速电压Ua (V)和励磁电流la (A)下的阳极电流la (|J A)表6 Ua-lc2的关系Ua (V)5.010.015.020.025.030.0lc (A)0.29103910.4700.5370.6000.656lc2 (A2 )0.0850.1530.2210.28803600.430