STRUCTURAL FEATURES OF SELENIUM 



507 



TABLE II 



Run 



ab 



be 



cd 



ad 



Temp 



(°C.) 



Time 



(sees.; 



Vacuum 

 (mm.) 



Char. 



of 

 Dep 



Remarks 



El 

 2 



2.5 

 3.0 



5.5 

 4.0 



2.5 

 3.5 



10.5 

 10.5 



221.0 2055 



4 

 5 

 6 



7 

 8 

 9 



10 

 11 

 12 



13 



k14 

 1.") 



16 



17 



18 



3.2 



3.2 

 3 . 5 



1.8 



3.5 



2.0t 



4.0 



l.5t 



^0 



3.0 



i.S 



5.5 



1.5 + 



5.3 



4.8 

 5.0 

 6.7 



5.5 



7.5 

 4.5 



5.5 

 3.5 

 5.0 



4.7 



1.5 



6.5 



2.5 



3.0 

 3.5 

 4.0 



3.5 

 3.5 

 2.0 



2.0 

 3.5 

 2.5 



2.5 



2.0 

 2.0 



11.0 



11.0 

 12.0 

 12.5 



12.5 

 13.0 

 10.5 



10.0 

 10.0 

 10.5 



10.5 



10.0 

 10.0 



l.Ot 

 3.5 



6.5 

 3.5 



2.0 



9.5 

 9.5 



219.0 



228.0 



226 . 8 

 233 . 7 

 238.0 



231.7 

 231.2 

 232 . 



229.6 



222 . 7 

 222 . 2 



224 . 8 



224.0 

 223 . 4 



227.7 



227 . 5 

 225 . 5 



2950 



2520 



2400 

 2430 

 2355 



2210 

 2520 

 2400 



2400 

 2355 

 2470 



2400 



2460 

 2400 



2400 



2370 

 2400 



0,0002- 7* 



.00016-14 



.00016-27 



not p:ood-2 



<0. 0001-10 



n.r.-22 



n.r.-41 



0.0002- 6 



n.r.-17 



good-S.'^ 



n.r.- 7 



n.r.-3r 



n.r.- T 



n.r.-3r 



< 0.0001- f 



<0. 0001-12 



better-2S 



good-35 



< 0.0001- F 



n.r.-28 



n.r.- f 



good-2P 



0.0002-6 



n.r.-21 



good-35 



n.r.- f 



• good-26 



0.0001-10 



n.r.-2( 



0.0001- 9 



n.r.-21 



good-30 



0.00004- 7 



good-24 



0.0002- 7 



n.r.-lF 



0.0002-11 



n.r.-21 



good-30 



n.r. 

 good-20 

 good-34 



0.0002- 8 



n.r.-17 



good-30 



n.r.- 9 



good-20 



good-34 



Zone 3 follows wiping 

 marks other zones do 

 not. Narrow ring around 

 outside wall within 1 cm. 

 of point a; cause(?), 

 two resistance lamps of 

 auxiliary heating circuit 

 had been off during this 



a 



b(?) 

 a 



h(V 



(For note on this run see 

 discussion.) 



Nodules on end of con- 

 densation tube. 

 (See discussion.) 



See discussion, where 

 aote is given for E8. 



(See discussion.) 



Individual nodules in 

 zone 1 not noticeable. 



Selenium below must 

 have solidified very soon 

 after removal of tube 

 from oven. 

 Fine nodules, zone 1 . 



Nodules, zone 1. 



No measurements on 

 zones. Margins not de- 

 fined (?). Deposit scrap- 

 es off like character b. 

 Small nodules, zone 1. 



Small nodules, zone 1, a 

 little larger than in E17 



