Fine structure of the luminescence spectra of organic molecules in crystalline solutions

✍ Scribed by A. Ciais; P. Pesteil

• Publisher: Elsevier Science
• Year: 1960
• Tongue: English
• Weight: 167 KB
• Volume: 1
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/s0011-2275(60)80036-7

✦ Synopsis

In Figure 2 are shown our measurements on three S-stabilized plutonium-aluminium alloys. The similarity with the x-plutonium curves suggests that the same feature is responsible for the anomalous resistive behaviour in both phases.

Figure 3 shows the variation of the electrical resistivity of 0~-neptunium with temperature down to 1"4 ° K. Below 31 ° K, p was found to be proportional to T 3'1. Overall purity of this specimen was only about 99 per cent (wt), the major impurities being 0.34 per cent (wt) calcium and 0.22 per cent (wt) uranium. Nevertheless, the residual resistivity of 3.55 [x~ cm (2.7 per cent of the ice-point value) was very small in comparison with those of the plutonium samples. If plutonium is indeed antiferromagnetic, the high values of P0 may possibly be due to incomplete ordering of the spins caused by the presence of specific impurities in solid solution.