Observation of the new isotope 17C using a combined time-of-flight particle-identification technique

doi:10.1016/0370-2693(68)90222-0

Physics Letters B

Volume 27, Issue 7, 2 September 1968, Pages 414-416

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Abstract

Addition of time-of-flight to the particle-identification technique used previously for the study of light nuclei ejected from uranium by 5.5 GeV protons has established the existence of ¹⁷C and the particle instability of ¹³Be.

References (3)

A.M. Poskanzer et al.
Phys. Rev. Letters
(1966)

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Cited by (21)

Discovery of isotopes with Zγ10
2012, Atomic Data and Nuclear Data Tables
Citation Excerpt :
It should be noted that the same article was simultaneously submitted to Nature, where it appeared 12 days later [76]. In 1968, Poskanzer reported the first observation of 17C in “Observation of the New Isotope 17C using a Combined Time-of-Flight Particle-Identification Technique” [82]. The Berkeley bevatron accelerated protons to 5.5 GeV which bombarded a uranium metal target.
High-energy collisions with atomic nuclei: The experimental results
1987, Physics Reports
The mass and low-lying level structure of 17C
1977, Physics Letters B
Mass measurements of 21O and 22O
1972, Nuclear Physics, Section A
Production of actinides and the search for super-heavy elements using secondary reactions induced by GeV protons
1972, Nuclear Physics, Section A
A search for actinide and super-heavy elements produced by means of secondary reactions during the irradiation of tungsten and uranium targets with 12 and 28 GeV protons has been made. Yields for production of many actinide isotopes in uranium targets are given up to and including ²⁴⁸Cf. Upper limits have also been established for spontaneous fission activities which could be attributed to the decay of possible super-heavy elements produced by means of secondary reactions.
Identification of nuclear fragments by a combined time-of-flight, ΔE-E technique
1970, Nuclear Instruments and Methods
Nuclear fragments of Z = 5 to 10 that resulted from the interaction of 5.5-GeV protons with uranium have been identified by a combined time-of-flight, ΔE-E technique. A thin ΔE detector was used so that the ΔE-E information provided only element resolution, not isotopic resolution. However, the measurement of the time-of-flight between the ΔE and E detectors together with the energy deposited in the E detector allowed the fragment mass to be determined. This technique enabled us to observe not only the major isotopes of these elements but also such neutron-rich nuclei as ¹⁸C and ²⁰N. An improved algorithm for power-law particle identification is also described.

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^☆: This work performed under the auspices of the U.S. Atomic Energy Commission.

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Physics Letters B

Abstract

References (3)

Phys. Rev. Letters

Cited by (21)

Discovery of isotopes with Zγ10

High-energy collisions with atomic nuclei: The experimental results

The mass and low-lying level structure of <sup>17</sup>C

Mass measurements of <sup>21</sup>O and <sup>22</sup>O

Production of actinides and the search for super-heavy elements using secondary reactions induced by GeV protons

Identification of nuclear fragments by a combined time-of-flight, ΔE-E technique

Observation of the new isotope 17C using a combined time-of-flight particle-identification technique☆

Abstract

Phys. Rev. Letters

Observation of the new isotope ¹⁷C using a combined time-of-flight particle-identification technique☆