Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A study was made of the radiations of the protactinium isotopes Pa/sup 227/, Pa/sup 228/, Pa/sup 225/, Pa/sup 230/, Pa/sup 232/, Pa/sup 233/ as well as Ac/sup 223/, and Ac/sup 224/, with primary emphasis placed on the investigation of the aipha-decay spectra with highresolution alpha-particle spectrographs. Decay schemes are presented in each case, and are interpreted where ever possible in terms of current theoretical nuclear models. The collective model of Bohr and Mottelson finds wide application in most csses, although the complexity of the decay schemes leaves certain features unexplained. (auth).
Nuclear Decay Studies of Protactinium Isotopes (thesis).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A study was made of the radiations of the protactinium isotopes Pa/sup 227/, Pa/sup 228/, Pa/sup 225/, Pa/sup 230/, Pa/sup 232/, Pa/sup 233/ as well as Ac/sup 223/, and Ac/sup 224/, with primary emphasis placed on the investigation of the aipha-decay spectra with highresolution alpha-particle spectrographs. Decay schemes are presented in each case, and are interpreted where ever possible in terms of current theoretical nuclear models. The collective model of Bohr and Mottelson finds wide application in most csses, although the complexity of the decay schemes leaves certain features unexplained. (auth).
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A study was made of the radiations of the protactinium isotopes Pa/sup 227/, Pa/sup 228/, Pa/sup 225/, Pa/sup 230/, Pa/sup 232/, Pa/sup 233/ as well as Ac/sup 223/, and Ac/sup 224/, with primary emphasis placed on the investigation of the aipha-decay spectra with highresolution alpha-particle spectrographs. Decay schemes are presented in each case, and are interpreted where ever possible in terms of current theoretical nuclear models. The collective model of Bohr and Mottelson finds wide application in most csses, although the complexity of the decay schemes leaves certain features unexplained. (auth).
Nuclear Decay Studies of Protactinium Isotopes
Author: Max Wilmer Hill
Publisher:
ISBN:
Category : Delayed neutrons
Languages : en
Pages : 112
Book Description
Publisher:
ISBN:
Category : Delayed neutrons
Languages : en
Pages : 112
Book Description
Alpha-Decay Studies of Protactinium Isotopes (thesis).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The alpha decay of Pa/sup 231/, Pa/sup 229/, Pa/sup 227/, and Ac/sup 223/ w as studied by an alpha-particle --gamma-ray coincidence technique. A 180 deg double-focusing spectrograph or goldsilicon solid-state detectors for alpha analysis and a sodium iodide (Tl-activated) scintillation crystals for gamma-ray detection were used. The ground states of Pa/sup 227/ and Pa/sup 229/ are shown to be populated by 5.46- and 5.73-Mev alpha particles, respectively. The rotational bands populated in the decay of Pa/sup 231/ are interpreted as being based on octupole vibrational levels predicted by the Bohr -Mottelson strong- coupling model. Modified decay schemes are presented. It is suggested that in odd-proton nuclei, the permanent nuclear deformation starts closer to the closed shell than in the even-even nuclei. A new alpha group at 5.47 Mev is noted in the alpha decay of Ac/sup 233/. No rotational structure is observed in the levels populated. Evidence is presented for the presence of two additional levels populated in the alpha decay of Pa/sup 231/. 40 references. (auth).
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The alpha decay of Pa/sup 231/, Pa/sup 229/, Pa/sup 227/, and Ac/sup 223/ w as studied by an alpha-particle --gamma-ray coincidence technique. A 180 deg double-focusing spectrograph or goldsilicon solid-state detectors for alpha analysis and a sodium iodide (Tl-activated) scintillation crystals for gamma-ray detection were used. The ground states of Pa/sup 227/ and Pa/sup 229/ are shown to be populated by 5.46- and 5.73-Mev alpha particles, respectively. The rotational bands populated in the decay of Pa/sup 231/ are interpreted as being based on octupole vibrational levels predicted by the Bohr -Mottelson strong- coupling model. Modified decay schemes are presented. It is suggested that in odd-proton nuclei, the permanent nuclear deformation starts closer to the closed shell than in the even-even nuclei. A new alpha group at 5.47 Mev is noted in the alpha decay of Ac/sup 233/. No rotational structure is observed in the levels populated. Evidence is presented for the presence of two additional levels populated in the alpha decay of Pa/sup 231/. 40 references. (auth).
Alpha-decay Studies of Protactinium Isotopes
Author: Vishnu B. Subrahmanyam
Publisher:
ISBN:
Category : Alpha decay
Languages : en
Pages : 80
Book Description
Publisher:
ISBN:
Category : Alpha decay
Languages : en
Pages : 80
Book Description
Extension of Alpha- and Beta-decay Systematics of Protactinium Isotopes
Author: W. Wayne Meinke
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ISBN:
Category : Protactinium
Languages : en
Pages : 8
Book Description
Publisher:
ISBN:
Category : Protactinium
Languages : en
Pages : 8
Book Description
Nuclear Science Abstracts
Author:
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ISBN:
Category : Nuclear energy
Languages : en
Pages : 670
Book Description
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 670
Book Description
The Beta-decay of Protactinium Isotopes
Author: Ong Ping Hok
Publisher:
ISBN:
Category : Beta rays
Languages : en
Pages : 114
Book Description
Publisher:
ISBN:
Category : Beta rays
Languages : en
Pages : 114
Book Description
Nuclear Science Abstracts
Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 1058
Book Description
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 1058
Book Description
Alpha decay properties of new protactinium isotopes
Author:
Publisher:
ISBN:
Category :
Languages : de
Pages : 27
Book Description
Publisher:
ISBN:
Category :
Languages : de
Pages : 27
Book Description
The Isotopes of Thorium, Protactinium and Uranium
Author: Earl K. Hyde
Publisher:
ISBN:
Category : Protactinium
Languages : en
Pages : 192
Book Description
Publisher:
ISBN:
Category : Protactinium
Languages : en
Pages : 192
Book Description