We present the observation of magic numbers for the heterocluster ion reaction ofargon and water for n = 3,9 and 15 which we attribute to the stability of the cluster ion. On comparison with the calculations of Bohmer and Peyerimhoff for ArnXe we feel this data suggests that in the case...
1.(General Physics)physicsany of the numbers 2, 8, 20, 28, 50, 82, and 126. Nuclides with these numbers of nucleons appear to have greater stability than other nuclides 2.(Chemistry)chema number of atoms that is particularly stable in certain types of compound that have clusters of the...
So what is a “magic number” in nuclear chemistry? Basically it is a number of nucleons, which can be either protons or neutrons, separately, arranged into complete shells within the atomic nucleus. The most widely recognized magic numbers are 2, 8, 20, 28, 50, 82, and 126. Thus I...
XM Gong,J Choi,CM Franzin,... - 《Journal of Biological Chemistry》 被引量: 107发表: 2004年 Magic Rule for Al_nH_m Magic Clusters Using the electronic shell closure criteria, we propose a new electron counting rule that enables us to predict the size, composition, and structure of man...
The subject of magic numbers in clusters has been one of long-standing interest since early observation of pronounced intensity anomalies seen in the mass spectral distributions of molecular and atomic systems (1–10). Early observations in the case of w
We think that the reason why transition temperatures were same is due to the same coordination numbers of the respective surface atoms if material has similar crystal structure even if materials differ. We consider these fractions are one kind of magic numbers, and also call these temperatures as...
This chapter discusses the magic numbers for shells of electrons and shells of atoms in binary clusters. It reviews recent studies of small binary clusters, with less than 100 atoms per clusters. Because of these small sizes, many of the species can be considered as molecules, implying the use...
Theoretical Chemistry AccountsF. Schulz, B. Hartke, A new proposal for the reason of magic numbers in alkali cation microhydration clusters, Theoretica Chimica Acta 114 (2005) 357-379.F. Schulz, B. Hartke, A new proposal for the reason of magic numbers in alkali cat- ion microhydration ...
ChemInform Abstract: Observation of "Magic Numbers" in the Population Distributions of the (NH3)nH+ 2 and (NH3)nH+ 2 Cluster Ions: Implications for Cluster... Peifer WR,Coolbaugh MT,Garvey J F.Observation of"magic numbers"in the population distributions of the(NH3)n1NH2+and(NH3)nH2+cluster...
Quantum chemistry calculations show that hydrogenation follows a site-specific sequence leading to the appearance of cations having 5, 11, or 17 hydrogen atoms attached, exactly the magic numbers found in the experiments. For these closed-shell cations, further hydrogenation requires appreciable ...