Perturbed angular correlations in 177Hf

1968 ◽  
Vol 46 (13) ◽  
pp. 1523-1526 ◽  
Author(s):  
W. H. Brooker ◽  
T. A. McMath ◽  
J. Murray ◽  
J. A. Cameron
Keyword(s):  
Room Temperature ◽  
Gamma Ray ◽  
G Factor ◽  
Angular Correlations ◽  
Perturbed Angular Correlations

Ions of 177Lu have been implanted in iron and nickel hosts at concentrations of about 1018/cm3. Perturbation of angular correlations in the gamma-ray cascade through the 113–keV level gives values for the internal fields on hafnium nuclei in these metals at room temperature and for this concentration of H(Fe) = −140 ± 10 kOe and H(Ni) = −60 ± 10 kOe. The rotation of the 250-keV level was also observed in the iron host. The nuclear g factor of this state is g = +0.26 ± 0.09.

NUCLEAR g FACTOR OF THE FIRST EXCITED STATE IN 106Pd AND THE INTERNAL FIELD ON PALLADIUM IN NICKEL

1967 ◽  
Vol 45 (5) ◽  
pp. 1813-1819 ◽  
Author(s):  
J. Murray ◽  
T. A. McMath ◽  
J. A. Cameron
Keyword(s):  
Excited State ◽  
Room Temperature ◽  
Internal Field ◽  
Cobalt Alloys ◽  
G Factor ◽  
Angular Correlations ◽  
Perturbed Angular Correlations ◽  
First Excited State

The nuclear g factor of the first excited state in 106Pd has been measured by the method of perturbed angular correlations. The perturbing fields used were the internal fields on palladium in dilute iron and cobalt alloys. By comparing the rotation caused by these alloys with the rotation observed when nickel was the host, a measurement of the internal field on palladium in nickel has been obtained.The g factor of the first excited state in 106Pd has been determined to be +0.35 ± 0.03. The internal field on palladium in nickel at room temperature was found to be −174 ± 13 kOe.

The Nuclear Quadrupole Interaction of 187W(β–)187Re in W(VI)-EDTA Complexes

2002 ◽  
Vol 57 (6-7) ◽  
pp. 620-622 ◽  
Author(s):  
Guida Sun ◽  
Weiqiao Liu ◽  
Tilman Butz
Keyword(s):  
Quadrupole Interaction ◽  
Room Temperature ◽  
Nuclear Quadrupole Interaction ◽  
Edta Complex ◽  
Angular Correlations ◽  
Perturbed Angular Correlations ◽  
Edta Complexes ◽  
Time Differential ◽  
Nuclear Quadrupole ◽  
Asymmetry Parameters

The nuclear quadrupole interaction of 187W(β-)187Re in W(VI)-EDTA complexes at room temperature was determined by time differential perturbed angular correlations (TDPAC) to be VQ = 1270(8) MHz with an asymmetry parameter η= 0.403(4). While the coordination geometry of the Mo(VI)- EDTA complex is known, there appears to be none for the W-analogue. The rather similar asymmetry parameters for the 187W(β-)187Re in W(VI)-EDTA complex and for the 99Mo(β-)99Tc in Mo(VI)- EDTA complex, determined previously, supports the idea that the coordination geometries in the Moand W-complexes are similar

Room-Temperature Degradation oft-Zr(Pr)O2in an Aqueous Suspension Revealed by Perturbed Angular Correlations

2008 ◽  
Vol 91 (7) ◽  
pp. 2357-2359
Author(s):  
María C. Caracoche ◽  
Jorge A. Martinez ◽  
Patricia C. Rivas ◽  
Fernanda Andreola ◽  
Federica Bondioli ◽  
...  
Keyword(s):  
Room Temperature ◽  
Aqueous Suspension ◽  
Angular Correlations ◽  
Perturbed Angular Correlations

DEFECT DYNAMICS IN PURE CeO2 STUDIED BY PERTURBED ANGULAR CORRELATIONS USING 181Hf

1994 ◽  
Vol 08 (05) ◽  
pp. 329-337
Author(s):  
F.G. REQUEJO ◽  
A.G. BIBILONI ◽  
C.P. MASSOLO ◽  
K. FREITAG
Keyword(s):  
Low Temperatures ◽  
Cerium Dioxide ◽  
Room Temperature ◽  
Oxygen Vacancies ◽  
Perturbed Angular Correlation ◽  
Thermal Treatments ◽  
Pure Ceo2 ◽  
Angular Correlations ◽  
Perturbed Angular Correlations ◽  
Ionic Implantation

Perturbed angular correlation (PAC) measurements were performed in pure cerium dioxide using 181 Hf as the probe. The activity was introduced by ionic implantation on pure CeO 2 pressed powder. The substitutional replacement of Ce by Hf and the removal of radiation damage due to the ion implantation were achieved through thermal treatments in air at increasing temperatures up to 1323 K. Once an unperturbed cubic environment for the hafnium probes was verified through PAC measurements at room temperature, thermal treatments in low O 2 pressure were performed in order to create oxygen vacancies in the sample. Subsequent PAC measurements in the temperature range 77 to 300 K revealed the presence of static defects at low temperatures that become mobile at room temperature. The defects were identified as oxygen vacancies probably at second neighbor sites. Our results are compatible with an activation energy for oxygen vacancy hopping in the order of 0.40 eV.

The Nuclear Quadrupole Interaction of 199mHg-Cysteine and 199mHg-tert-butyl-mercaptide

1992 ◽  
Vol 47 (1-2) ◽  
pp. 85-88 ◽  
Author(s):  
T. Butz ◽  
W. Tröger ◽  
Th. Pöhlmann ◽  
O. Nuyken
Keyword(s):  
Quadrupole Interaction ◽  
Room Temperature ◽  
Interaction Strength ◽  
Nuclear Quadrupole Interaction ◽  
Angular Correlations ◽  
Tert Butyl ◽  
Perturbed Angular Correlations ◽  
Dramatic Difference ◽  
Carrier Free ◽  
Nuclear Quadrupole

AbstractThe nuclear quadrupole interaction of 199mHg in Hg-cysteine and Hg-tert-butyl mercaptide was determined at room temperature by perturbed angular correlations. The dramatic difference in the interaction strength between both compounds is a result of the two-fold and four-fold sulfur coordination, respectively. Moreover, we compared the preparation of Hg-cysteine using a Hg: cysteine ratio of 1:2 and using carrier-free 199mHg from ISOLDE/CERN and obtained identical results.

One-step synthesis of well-dispersed polypyrrole copolymers under gamma-ray irradiation

2021 ◽  
Vol 12 (5) ◽  
pp. 645-649
Author(s):  
Yu Gu ◽  
Yuqing Qiao ◽  
Yusen Meng ◽  
Ming Yu ◽  
Bowu Zhang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gamma Ray ◽  
Gamma Ray Irradiation ◽  
One Step ◽  
First Time

Herein, we report for the first time the synthesis of polypyrrole copolymers with good solvent-dispersibility under gamma-ray irradiation at room temperature in air.

Study of conformational changes in bovine serum albumin by perturbed angular correlations

1980 ◽  
Vol 171 (3) ◽  
pp. 603-606 ◽  
Author(s):  
P.W. Martin ◽  
C.A. Kalfas ◽  
K. Skov
Keyword(s):  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Conformational Changes ◽  
Bovine Serum ◽  
Angular Correlations ◽  
Perturbed Angular Correlations

Effect of Dislocations on Perturbed Angular Correlations in Paramagnets

1973 ◽  
Vol 56 (2) ◽  
pp. 637-643 ◽  
Author(s):  
G. A. Denisenko ◽  
E. P. Khaimovich
Keyword(s):  
Angular Correlations ◽  
Perturbed Angular Correlations

Application of perturbed angular correlations to studies of impurity complex formation in metals

1991 ◽  
Vol 2 (3-4) ◽  
pp. (249)457-(262)470
Author(s):  
Andrzej Hrynkiewicz ◽  
Krzysztof Kr�las ◽  
Pawe? Wodniecki
Keyword(s):  
Complex Formation ◽  
Angular Correlations ◽  
Perturbed Angular Correlations ◽  
Impurity Complex

Gamma-Ray Angular Correlations and Lifetime Measurements for Some Excited States ofNe21

1969 ◽  
Vol 186 (4) ◽  
pp. 1174-1188 ◽  
Author(s):  
J. G. Pronko ◽  
C. Rolfs ◽  
H. J. Maier
Keyword(s):  
Excited States ◽  
Gamma Ray ◽  
Lifetime Measurements ◽  
Angular Correlations
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