Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Well-developed deformation in 42Si   Excited states in 38,40,42Si nuclei have been studied via in-beam gamma-ray
spectroscopy with multi-nucleon removal reactions. Intense radioactive beams of
40S and 44S provided at the new facility of the RIKEN Radioactive Isotope Beam
Factory enabled gamma-gamma coincidence measurements. A prominent gamma line
observed with an energy of 742(8) keV in 42Si confirms the 2+ state reported in
an earlier study. Among the gamma lines observed in coincidence with the 2+ ->
0+ transition, the most probable candidate for the transition from the yrast 4+
state was identified, leading to a 4+_1 energy of 2173(14) keV. The energy
ratio of 2.93(5) between the 2+_1 and 4+_1 states indicates well-developed
deformation in 42Si at N=28 and Z=14. Also for 38,40Si energy ratios with
values of 2.09(5) and 2.56(5) were obtained. Together with the ratio for 42Si,
the results show a rapid deformation development of Si isotopes from N=24 to
N=28.

28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con