Levels in 143Pr populated in the decay of 143Ce

1968 ◽  
Vol 46 (24) ◽  
pp. 2797-2808 ◽  
Author(s):  
P. R. Gregory ◽  
L. Schellenberg ◽  
Z. Sujkowski ◽  
M. W. Johns
Keyword(s):  
Decay Scheme ◽  
Conversion Coefficients ◽  
Γ Rays ◽  
Coincidence Arrangement ◽  
Weak Transitions

Experiments using Ge(Li) and Nal(Tl) detectors singly and in a 2-parameter coincidence arrangement have been carried out to establish the role of a number of weak transitions in the decay of 143Ce. Twenty-six of the twenty-seven observed γ rays have been placed in a decay scheme with levels at 57.4, 350.6, 490.2, 721.8, 739.9, 847.9, 937.3, 1059.8, (1156.5), 1160.1, 1381.6, and 1397.4 keV. The K-conversion coefficients of the 293 and 350 keV transitions, measured with a Si(Li) detector, are 0.10 ± 02 and 0.024 ± 0.03 respectively.

scholarly journals On the Decay of 165Dy

1968 ◽  
Vol 23 (7) ◽  
pp. 962-967
Author(s):  
E. Bashandy ◽  
N. Ibrahiem ◽  
G. El-Sayad
Keyword(s):  
Decay Scheme ◽  
Internal Conversion ◽  
Level Structure ◽  
Low Energy ◽  
Conversion Electron Spectrum ◽  
Nuclear Models ◽  
Conversion Coefficients ◽  
Γ Rays ◽  
Double Focusing ◽  
Experimental Level

The internal conversion electron spectrum of transitions in the decay of (139 min) 165Dy to 165Ho has been studied using a high resolution iron-free double focusing β-ray spectrometer. In addition to γ rays previously reported eight new γ rays, mostly in the low energy region, have been observed. A decay scheme involving 17 excited levels is proposed for 165Ho. Multipolarity data, obtained from the measurements of absolute or ratios of conversion coefficients of γ rays, were utilized for assigning possible spins and parities to the levels of 165Ho. The experimental level structure is discussed in the light of nuclear models.

scholarly journals Energy Levels of 53Mn from the β-Decay of 53Fe

1974 ◽  
Vol 29 (5) ◽  
pp. 702-705
Author(s):  
L. F. Canto ◽  
S. de Barros
Keyword(s):  
High Resolution ◽  
Decay Scheme ◽  
Theoretical Calculations ◽  
Energy Levels ◽  
Β Decay ◽  
Γ Rays ◽  
Weak Transitions

Abstract The γ rays following the β-decay of 53Fe were investigated with high resolution detectors. Two unreported weak transitions were detected at the energies 1177 ± 1 keV and 2305 ± 1 keV. Log ft values were determined and spin and parity assignments made. On the basis of the results attained, a new decay scheme was proposed. Comparison with theoretical calculations are made.

Role of weak transitions in multiphoton excitation of molecules by IR laser radiation

1978 ◽  
Vol 25 (3) ◽  
pp. 337-342 ◽  
Author(s):  
I.N. Knyazev ◽  
V.S. Letokhov ◽  
V.V. Lobko
Keyword(s):  
Laser Radiation ◽  
Multiphoton Excitation ◽  
Ir Laser ◽  
Weak Transitions

scholarly journals Role of the Quark-Quark Correlation in Baryon Structure and Non-Leptonic Weak Transitions of Hyperons

2004 ◽  
Vol 112 (1) ◽  
pp. 99-117 ◽  
Author(s):  
E. Hiyama ◽  
K. Suzuki ◽  
H. Toki ◽  
M. Kamimura
Keyword(s):  
Quark Correlation ◽  
Weak Transitions

Adaptive Responses to Low-Dose/Low-Dose-Rate γ Rays in Normal Human Fibroblasts: The Role of Growth Architecture and Oxidative Metabolism

2006 ◽  
Vol 166 (6) ◽  
pp. 849-857 ◽  
Author(s):  
Sonia M. de Toledo ◽  
Nesrin Asaad ◽  
Perumal Venkatachalam ◽  
Ling Li ◽  
Roger W. Howell ◽  
...  
Keyword(s):  
Dose Rate ◽  
Oxidative Metabolism ◽  
Low Dose ◽  
Human Fibroblasts ◽  
Adaptive Responses ◽  
Low Dose Rate ◽  
Normal Human ◽  
Γ Rays

Decay properties of 181Ir

1978 ◽  
Vol 56 (3) ◽  
pp. 321-326 ◽  
Author(s):  
I. M. Ladenbauer-Bellis ◽  
P. Sen ◽  
H. Bakhru
Keyword(s):  
Half Life ◽  
Decay Scheme ◽  
Heavy Ion ◽  
Heavy Ion Reactions ◽  
X Ray ◽  
Decay Properties ◽  
Helium Jet ◽  
Γ Rays ◽  
Ge Detector ◽  
Γ Ray

181Ir activity was produced via the following heavy-ion reactions: 169Tm (16O,4n)181Ir and 169Tm(19F,7n)181Pt (51 s) decaying to 181Ir. The half-life of 181Ir was found to be 4.90 ± 0.15 min. Singles and coincidence γ-ray measurements were performed using 30–40 cm3 Ge(Li) detectors. X-Ray measurements were carried out using an intrinsic Ge-detector. Additionally the helium jet system was used to study the properties of this isotope. The following γ rays were found to belong to the decay of 181Ir: 19.6, 65.3, 93.8, 107.6, 117.9, 123.5, 184.6, 189.9, 227.0, 231.6, 239.2, 309.0, 318.9, 350.5, 352.8, 375.2, 576.5, 700.1, 871.2, 1182.3, 1192.6, 1347.1, 1381.0, 1528.8, 1545.0, 1565.6, 1593.4, 1639.6, 1646.4, 1652.5, and 1714.9 keV. A tentative decay scheme is proposed for 181Ir, verifying levels in l8lOs that have been obtained by reaction work. The proposed decay scheme as well as spin and parity assignments of some of the 181Os levels are discussed.

scholarly journals The Role of Protein Kinase Activators and ZFN in Reducing the Harmful Effects of Total Body Irradiation

2020 ◽  
Author(s):  
hana ahmd alahmd ◽  
sawsan madi ◽  
adnan ekhtiar
Keyword(s):  
Flow Cytometry ◽  
Radiation Therapy ◽  
Lymphatic System ◽  
Antiviral Treatment ◽  
Whole Body ◽  
Pathological Changes ◽  
Γ Rays ◽  
Total Body ◽  
Harmful Effects

Abstract ObjectiveAIDS patients are predisposed to develop certain tumors. Radiation therapy is one of the main treatments for cancer. However, exposure to ionizing radiation leads to defects in the lymphatic system. The cells with the highest sensitivity to radiation are the T lymphocytes. We aim to investigate the effect of irradiation on the ratio of CD4 to CD8, and to oppose this effect by using Bryostatin (B) and ZFN and ART (Anti-Retroviral Therapy). So Balb/C mice aged 6-8 weeks were whole-body irradiated with 1.5 Gy of γ-rays, was then mice were treated with ZFN, Bryostatin intraperitoneally. And orally Antiviral treatment. At the end of the study, CD4/CD8 was measured by flow cytometry.Results Irradiation caused significant pathological changes that led to a clear reversal of CD4/CD8 ratio significantly within the normal radiating group. there are no significant differences in CD4/CD8 ratio between all groups treated with ZFN+ X, Z+ B+ X, ART+ X and normal group.So our study suggests the effect of Bryostatin in protecting living organs that were exposed to irradiation in mice. ZFN cuts off both BAX and BAK, and thus decreases apoptotic proteins, reducing cell death.

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