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100527e19890601cau st f0|||||eng|d |
| 035 |
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|a (TOE)ost5918746
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| 035 |
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|a (TOE)5918746
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| 040 |
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|a TOE
|c TOE
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| 049 |
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|a GDWR
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| 072 |
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7 |
|a 73
|2 edbsc
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| 086 |
0 |
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|a E 1.99:lbl-27387
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| 086 |
0 |
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|a E 1.99:lbl-27387
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| 245 |
0 |
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|a Decay studies of nuclei near the proton drip line
|h [electronic resource] :
|b ³⁵Ca, ³¹Ar, ⁶⁹Br, ⁶⁵As.
|
| 260 |
|
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|a Berkeley, Calif. :
|b Lawrence Berkeley National Laboratory ;
|a Oak Ridge, Tenn. :
|b distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy,
|c 1989.
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| 300 |
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|a Pages: 100 :
|b digital, PDF file.
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| 336 |
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|a text
|b txt
|2 rdacontent.
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| 337 |
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|a computer
|b c
|2 rdamedia.
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| 338 |
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|a online resource
|b cr
|2 rdacarrier.
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| 500 |
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|a Published through the Information Bridge: DOE Scientific and Technical Information.
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| 500 |
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|a 06/01/1989.
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| 500 |
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|a "lbl-27387"
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| 500 |
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|a "DE89015342"
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| 500 |
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|a Reiff, J.E.
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| 520 |
3 |
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|a Studies of new beta-delayed two-proton emitters and a search for ground state proton radioactivity in medium mass nuclei were performed using various experimental techniques in conjunction with several detection systems. A helium-jet transport system and three-element silicon telescopes were used to discover the existence and detect the decay of the first T/sub Z/ = −5/2 nuclide, ³⁵Ca. Two-proton emission from the T = 5/2 isobaric analog state in ³⁵K at an excitation energy of 9.053 /plus minus/ 0.045 MeV, fed by the superallowed beta decay of ³⁵Ca, resulted in transitions to both the ground state and first excited state of ³³Cl. The corresponding two-proton sum energies were 4.089 /plus minus/ 0.030 MeV and 3.287 /plus minus/ 0.030 MeV. Measurements of the individual proton energies indicated the prevalence of a sequential decay mechanism. Using the isobaric multiplet mass equation, the mass excess of ³⁵Ca was calculated to be 4.453 /plus minus/ 0.060 MeV. In order to study whose half-lives were too short for the helium-jet system, an in-beam recoil catcher wheel was constructed. The wheel speed can be varied to study nuclides whose half-lives range from 100 μs to ∼250 ms. The first new decay observed with the wheel system and traditional ΔE-E telescopes was the beta-delayed two-proton emission from ³¹Ar. The two-proton sum energy of ∼7.5 MeV corresponds to a transition from the isobaric analog state in ³¹Cl to the ground state of ²⁹P. The search for proton radioactivity required the development of low energy, particle identification detector telescopes. These telescopes, comprised of a gas ΔE and silicon E, were used in conjunction with the in-beam recoil catcher wheel to search for ground state proton emission from ⁶⁹Br and ⁶⁵As. 90 refs., 24 figs., 8 tabs.
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| 536 |
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|b AC03-76SF00098.
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| 650 |
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7 |
|a Beta Decay Radioisotopes.
|2 local.
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| 650 |
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7 |
|a Nuclear Decay.
|2 local.
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| 650 |
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7 |
|a Bromine Isotopes.
|2 local.
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| 650 |
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7 |
|a Alkaline Earth Isotopes.
|2 local.
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| 650 |
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7 |
|a Calcium Isotopes.
|2 local.
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| 650 |
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7 |
|a Even-odd Nuclei.
|2 local.
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| 650 |
|
7 |
|a Millisec Living Radioisotopes.
|2 local.
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| 650 |
|
7 |
|a Isotopes.
|2 local.
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| 650 |
|
7 |
|a Argon Isotopes.
|2 local.
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| 650 |
|
7 |
|a Arsenic 66.
|2 local.
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| 650 |
|
7 |
|a Beta Decay.
|2 local.
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| 650 |
|
7 |
|a Transition Amplitudes.
|2 local.
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| 650 |
|
7 |
|a Intermediate Mass Nuclei.
|2 local.
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| 650 |
|
7 |
|a Beta-plus Decay Radioisotopes.
|2 local.
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| 650 |
|
7 |
|a Data Acquisition Systems.
|2 local.
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| 650 |
|
7 |
|a Odd-even Nuclei.
|2 local.
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| 650 |
|
7 |
|a Odd-odd Nuclei.
|2 local.
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| 650 |
|
7 |
|a Calcium 35.
|2 local.
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| 650 |
|
7 |
|a Arsenic Isotopes.
|2 local.
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| 650 |
|
7 |
|a Decay.
|2 local.
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| 650 |
|
7 |
|a Bromine 69.
|2 local.
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| 650 |
|
7 |
|a Detection.
|2 local.
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| 650 |
|
7 |
|a Light Nuclei.
|2 local.
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| 650 |
|
7 |
|a Nuclei.
|2 local.
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| 650 |
|
7 |
|a Argon 31.
|2 local.
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| 650 |
|
7 |
|a Radioisotopes.
|2 local.
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| 650 |
|
7 |
|a Amplitudes.
|2 local.
|
| 650 |
|
7 |
|a Nuclear Physics And Radiation Physics.
|2 edbsc.
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| 710 |
2 |
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|a Lawrence Berkeley Laboratory.
|4 res.
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| 710 |
2 |
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|a Lawrence Berkeley National Laboratory.
|4 res.
|
| 710 |
1 |
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|a United States.
|b Department of Energy.
|b Office of Scientific and Technical Information.
|4 dst.
|
| 856 |
4 |
0 |
|u http://www.osti.gov/servlets/purl/5918746-B4i8Qc/
|z Online Access
|
| 907 |
|
|
|a .b59998532
|b 03-06-23
|c 05-28-10
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| 998 |
|
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|a web
|b 05-28-10
|c f
|d m
|e p
|f eng
|g cau
|h 0
|i 1
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| 956 |
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|a Information bridge
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| 999 |
f |
f |
|i 2a9772c1-8f21-598f-9080-22c16d7a038f
|s 85a9f7f3-b752-5582-9930-d0b0bb3424f9
|
| 952 |
f |
f |
|p Can circulate
|a University of Colorado Boulder
|b Online
|c Online
|d Online
|e E 1.99:lbl-27387
|h Superintendent of Documents classification
|i web
|n 1
|
