Energy levels of A = 21−44 nuclei (V)

doi:10.1016/0375-9474(73)91131-7

Nuclear Physics A

Volume 214, 29 October 1973, Pages 1-625

https://doi.org/10.1016/0375-9474(73)91131-7 Get rights and content

Abstract

The experimentally determined properties of energy levels of A = 21−44 nuclei are compiled and evaluated with emphasis on nuclear spectroscopy. For each of the nuclides reviewed, the available information on excitation energies, spins, parities, isospins, lifetimes or widths and observed decay is summarized in a master table.

References (3712)

Abaschi et al.
Compt. Rend.
(1967)
Abulaffio
Phys. Rev.
(1969)
Abgrall et al.
Phys. Lett.
(1969)
Abe et al.
J. Phys. Soc. Jap.
(1969)
Abbondanno et al.
Nuovo Cim. Lett.
(1970)
Abgrall et al.
J. de Phys.
(1971)
Adams
Nucl. Phys.
(1969)
Adelberger et al.
Phys. Rev. Lett.
(1971)
Ádam et al.
Nucl. Phys.
(1972)
Adelberger et al.
Phys. Rev. Lett.
(1972)

Afonin et al.

Yad. Fiz.

(1967)

Afonin et al.

Sov. J. Nucl. Phys.

(1968)

Ahmed

Z. Phys.

(1972)

Ajzenberg-Selove et al.

Phys. Rev.

(1966)

Ajzenberg-Selove et al.

Phys. Rev.

(1969)

Ajzenberg-Selove et al.

Nucl. Phys.

(1970)

Ajzenberg-Selove

Nucl. Phys.

(1972)

Akiyama et al.

Allan et al.

Allen

Phys. Rev.

(1959)

Almqvist et al.

Phys. Rev. Lett.

(1960)

Alexander et al.

Nucl. Phys.

(1960)

Almqvist et al.

Phys. Rev.

(1964)

Alkhazov

Izv. Akad. Nauk (ser. fiz.)

(1964)

Aldridge et al.

Phys. Rev.

(1968)

Alford

Nucl. Phys.

(1969)

Aldridge et al.

Phys. Lett.

(1969)

Alexander

Alexander et al.

Bull. Amer. Phys. Soc.

(1970)

Alburger et al.

Phys. Rev.

(1970)

Alburger et al.

Phys. Rev.

(1971)

Alvarez

Phys. Rev.

(1971)

Alenius

Nuovo Cim.

(1972)

Alexander et al.

Can. J. Phys.

(1972)

Alderliesten and Van Loon, Nucl. Phys. to be...

Anderson et al.

Nucl. Phys.

(1962)

Abrahams et al.Abrahams et al.

Abul-Magd

Nucl. Phys.

(1967)

Abaschi et al.

Compt. Rend.

(1967)

Abulaffio

Phys. Rev.

(1967)

Abulaffio

Phys. Rev.

(1968)

Abe et al.

J. Phys. Soc. Jap.

(1968)

Abe et al.

J. Phys. Soc. Jap.

(1968)

Abe et al.

J. Phys. Soc. Jap.

(1968)

Abrahams et al.

Nucl. Phys.

(1969)

Abul-Magd

Nucl. Phys.

(1969)

Abgrall et al.

Nucl. Phys.

(1969)

Abecasis et al.

Nucl. Phys.

(1970)

Abbondanno

Nuovo Cim.

(1970)

Abgrall et al.

Nucl. Phys.

(1972)

Adams et al.

J. of Phys.

(1968)

Adelberger et al.

Nucl. Phys.

(1969)

Adams et al.

Nucl. Phys.

(1970)

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Energy levels of A = 21−44 nuclei (V)

Abstract

Compt. Rend.

Phys. Rev.

Phys. Lett.

J. Phys. Soc. Jap.

Nuovo Cim. Lett.

J. de Phys.

Nucl. Phys.

Phys. Rev. Lett.

Nucl. Phys.

Phys. Rev. Lett.

Yad. Fiz.

Sov. J. Nucl. Phys.

Z. Phys.

Phys. Rev.

Phys. Rev.

Nucl. Phys.

Nucl. Phys.

Phys. Rev.

Phys. Rev. Lett.

Nucl. Phys.

Phys. Rev.

Izv. Akad. Nauk (ser. fiz.)

Phys. Rev.

Nucl. Phys.

Phys. Lett.

Bull. Amer. Phys. Soc.

Phys. Rev.

Phys. Rev.

Phys. Rev.

Nuovo Cim.

Can. J. Phys.

Nucl. Phys.

Nucl. Phys.

Compt. Rend.

Phys. Rev.

Phys. Rev.

J. Phys. Soc. Jap.

J. Phys. Soc. Jap.

J. Phys. Soc. Jap.

Nucl. Phys.

Nucl. Phys.

Nucl. Phys.

Nucl. Phys.

Nuovo Cim.

Nucl. Phys.

J. of Phys.

Nucl. Phys.

Nucl. Phys.