The spherical to asymmetric shape transition in the mass region with 50<(N, Z)<82

1974 ◽  
Vol 267 (2) ◽  
pp. 149-155 ◽  
Author(s):  
D. Habs ◽  
H. Klewe-Nebenius ◽  
K. Wisshak ◽  
R. Löhken ◽  
G. Nowicki ◽  
...  
Keyword(s):  
Mass Region ◽  
Shape Transition ◽  
Asymmetric Shape

Dipole strength distributions in the stable Ba isotopesBa134–138: A study in the mass region of a nuclear shape transition

2004 ◽  
Vol 70 (4) ◽  
Author(s):  
M. Scheck ◽  
H. von Garrel ◽  
N. Tsoneva ◽  
D. Belic ◽  
P. von Brentano ◽  
...  
Keyword(s):  
Mass Region ◽  
Nuclear Shape ◽  
Shape Transition ◽  
Dipole Strength ◽  
Strength Distributions

Low-energy photon scattering off 142,146,148,150Nd: An investigation in the mass region of a nuclear shape transition

1990 ◽  
Vol 509 (3) ◽  
pp. 587-604 ◽  
Author(s):  
H.H. Pitz ◽  
R.D. Heil ◽  
U. Kneissl ◽  
S. Lindenstruth ◽  
U. Seemann ◽  
...  
Keyword(s):  
Mass Region ◽  
Low Energy ◽  
Nuclear Shape ◽  
Shape Transition ◽  
Photon Scattering ◽  
Energy Photon

Evolution of collectivity and shape transition in Zn66

2020 ◽  
Vol 102 (6) ◽  
Author(s):  
S. Rai ◽  
U. S. Ghosh ◽  
B. Mukherjee ◽  
A. Biswas ◽  
A. K. Mondal ◽  
...  
Keyword(s):  
Shape Transition

scholarly journals Detection capability of Migdal effect for argon and xenon nuclei with position sensitive gaseous detectors

2020 ◽  
Author(s):  
Kiseki D Nakamura ◽  
Kentaro Miuchi ◽  
Shingo Kazama ◽  
Yutaro Shoji ◽  
Masahiro Ibe ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Experimental Approach ◽  
Isotope Separation ◽  
Mass Region ◽  
Background Rate ◽  
Argon Gas ◽  
Low Mass ◽  
Position Sensitive ◽  
Set Up ◽  
Direct Dark Matter

Abstract Migdal effect is attracting interests because of the potential to enhance the sensitivities of direct dark matter searches to the low mass region. In spite of its great importance, the Migdal effect has not been experimentally observed yet. A realistic experimental approach towards the first observation of the Migdal effect in the neutron scattering was studied with Monte Carlo simulations. In this study, potential background rate was studied together with the event rate of the Migdal effect by a neutron source. It was found that a table-top sized ~ (30cm)3 position-sensitive gaseous detector filled with argon or xenon target gas can detect characteristic signatures of the Migdal effect with sufficient rates (O(102 ~ 103) events/day). A simulation result of a simple experimental set-up showed two significant background sources, namely the intrinsic neutrons and the neutron induced gamma-rays. It is found that the intrinsic neutron background rate for the argon gas is acceptable level and some future study for the reduction of the gamma-rays from the laboratory would make the observation of the Migdal effect possible. The background for the xenon gas, on the other hand, is found to be much more serious than for the argon gas. Future works on the isotope separation as well as the reduction of the gamma-rays from the detector and laboratory will be needed before the Migdal effect observation for xenon gas case.

scholarly journals Small Mass but Strong Information: Diagnostic Ions Provide Crucial Clues to Correctly Identify Histone Lysine Modifications

Proteomes ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 18
Author(s):  
Alaa Hseiky ◽  
Marion Crespo ◽  
Sylvie Kieffer-Jaquinod ◽  
François Fenaille ◽  
Delphine Pflieger
Keyword(s):  
Amino Acid ◽  
Small Mass ◽  
Mass Region ◽  
Amino Acid Sequences ◽  
Lysine Modification ◽  
Lysine Residues ◽  
Two Factors ◽  
Low Mass ◽  
Diagnostic Ions

(1) Background: The proteomic analysis of histones constitutes a delicate task due to the combination of two factors: slight variations in the amino acid sequences of variants and the multiplicity of post-translational modifications (PTMs), particularly those occurring on lysine residues. (2) Methods: To dissect the relationship between both aspects, we carefully evaluated PTM identification on lysine 27 from histone H3 (H3K27) and the artefactual chemical modifications that may lead to erroneous PTM determination. H3K27 is a particularly interesting example because it can bear a range of PTMs and it sits nearby residues 29 and 31 that vary between H3 sequence variants. We discuss how the retention times, neutral losses and immonium/diagnostic ions observed in the MS/MS spectra of peptides bearing modified lysines detectable in the low-mass region might help validate the identification of modified sequences. (3) Results: Diagnostic ions carry key information, thereby avoiding potential mis-identifications due to either isobaric PTM combinations or isobaric amino acid-PTM combinations. This also includes cases where chemical formylation or acetylation of peptide N-termini artefactually occurs during sample processing or simply in the timeframe of LC-MS/MS analysis. Finally, in the very subtle case of positional isomers possibly corresponding to a given mass of lysine modification, the immonium and diagnostic ions may allow the identification of the in vivo structure.

Charge exchange reactions on medium and heavy mass targets at intermediate energies

2019 ◽  
Vol 35 (08) ◽  
pp. 2050045
Author(s):  
Pardeep Singh ◽  
Monika Singh ◽  
Neha Rani
Keyword(s):  
Charge Exchange ◽  
Cross Sections ◽  
Energy Charge ◽  
Impulse Approximation ◽  
Mass Region ◽  
Intermediate Energy ◽  
Exchange Reactions ◽  
Plane Wave Impulse Approximation ◽  
Text Type ◽  
Intermediate Energies

The nuclear isotopic structure can be understood easily via the intermediate-energy charge exchange reactions of (p, n) and [Formula: see text]He, [Formula: see text] type. In the current contribution, we present some results for charge exchange reactions induced by 3He on targets lying in mass region [Formula: see text] within the theoretical framework of plane wave impulse approximation (PWIA) and distorted wave impulse approximation (DWIA). Here, the recoil effects in PWIA have also been considered. Particularly, the angular distributions and the unit cross-sections have been calculated and compared with the available data. Further, the importance of inclusion of the exchange contribution in these reactions is also considered, which eventually enhance the matching with data.

Self consistent calculations of a possible shape transition in neutron deficient mercury isotopes

1973 ◽  
Vol 46 (1) ◽  
pp. 11-14 ◽  
Author(s):  
M. Cailliau ◽  
Jocelyne Leterssier ◽  
H. Flocard ◽  
P. Quentin
Keyword(s):  
Shape Transition ◽  
Mercury Isotopes ◽  
Self Consistent
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