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Detailed photonuclear cross-section calculations and astrophysical applications
We have investigated the role of an isomeric state and its coupling to the ground state (g.s.) via photons and neutron inelastic scattering in a stellar environment by making detailed photonuclear and neutron cross-section calculations for /sup 176/Lu and /sup 210/Bi. In the case of /sup 176/Lu, the g.s. would function as an excellent galactic slow- (s-) process chronometer were it not for the 3.7-h isomer at 123 keV. Our calculations predicted much larger photon cross sections for production of the isomer, as well as a lower threshold, than had been assumed based on earlier measurements. These two factors combine to indicate that an enormous correction, a factor of 10/sup 7/, must be applied to shorten the current estimate of the half-life against photoexcitation of /sup 176/Lu as a function of temperature. This severely limits the use of /sup 176/Lu as a stellar chronometer and indicates a significantly lower temperature at which the two states reach thermal equilibrium. For /sup 210/Bi, our preliminary calculations of the production and destruction of the 3 /times/ 10/sup 6/ y isomeric state by neutrons and photons suggest that the /sup 210/Bi isomer may not be destroyed by photons as rapidly as assumed in certain …
Date:
June 15, 1989
Creator:
Gardner, D. G.; Gardner, M. A. & Hoff, R. W.
Object Type:
Article
System:
The UNT Digital Library
Perry Daily Journal (Perry, Okla.), Vol. 96, No. 133, Ed. 1 Saturday, July 15, 1989
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 15, 1989
Creator:
Watson, Milo W.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Clifton Record (Clifton, Tex.), Vol. 94, No. 24, Ed. 1 Thursday, June 15, 1989
Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
June 15, 1989
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Perry Daily Journal (Perry, Okla.), Vol. 96, No. 263, Ed. 1 Friday, December 15, 1989
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 15, 1989
Creator:
Watson, Milo W.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Perry Daily Journal (Perry, Okla.), Vol. 96, No. 108, Ed. 1 Thursday, June 15, 1989
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 15, 1989
Creator:
Watson, Milo W.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Perry Daily Journal (Perry, Okla.), Vol. 96, No. 186, Ed. 1 Friday, September 15, 1989
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 15, 1989
Creator:
Watson, Milo W.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Jewish Herald-Voice (Houston, Tex.), Vol. 81, No. 10, Ed. 1 Thursday, June 15, 1989
Weekly Jewish newspaper from Houston, Texas that includes local, state, and national news along with advertising.
Date:
June 15, 1989
Creator:
Samuels, Joseph W. & Samuels, Jeanne F.
Object Type:
Newspaper
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 67, No. 13, Ed. 1 Sunday, January 15, 1989
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 15, 1989
Creator:
Lomenick, Rick
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 67, No. 247, Ed. 1 Sunday, October 15, 1989
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 15, 1989
Creator:
Lomenick, Rick
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 67, No. 40, Ed. 1 Wednesday, February 15, 1989
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 15, 1989
Creator:
Lomenick, Rick
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Pawhuska Journal-Capital (Pawhuska, Okla.), Vol. 79, No. 30, Ed. 1 Saturday, April 15, 1989
Semiweekly newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 15, 1989
Creator:
Ritzhaupt, Linda
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 67, No. 222, Ed. 1 Friday, September 15, 1989
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 15, 1989
Creator:
Lomenick, Rick
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 67, No. 300, Ed. 1 Friday, December 15, 1989
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 15, 1989
Creator:
Lomenick, Rick
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Railroad Commission of Texas Oil and Gas Division Annual Report: 1988, Volume 1
First part of an annual report of the Texas Railroad Commission's Oil and Gas Division providing background on the industry and the agency's activities, information related to the production of oil and gas, and data regarding production by field.
Date:
June 15, 1989
Creator:
Railroad Commission of Texas. Oil and Gas Division.
Object Type:
Report
System:
The Portal to Texas History
Collegian (Hurst, Tex.), Vol. 2, No. 9, Ed. 1 Wednesday, November 15, 1989
Weekly student newspaper of Tarrant County Junior College published in Hurst, Texas that includes school news and information along with advertising.
Date:
November 15, 1989
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Sanger Courier (Sanger, Tex.), Vol. 90, No. 24, Ed. 1 Thursday, June 15, 1989
Weekly newspaper from Sanger, Texas that includes local, state, and national news along with extensive advertising.
Date:
June 15, 1989
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Jacksboro Gazette-News (Jacksboro, Tex.), Vol. 108, No. 2, Ed. 1 Monday, May 15, 1989
Weekly newspaper from Jacksboro, Texas that includes local, state, and national news along with extensive advertising.
Date:
May 15, 1989
Creator:
McGee, Leigh
Object Type:
Newspaper
System:
The Portal to Texas History
The Oklahoma Eagle (Tulsa, Okla.), Vol. 68, No. 22, Ed. 1 Thursday, June 15, 1989
Weekly newspaper from Tulsa, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 15, 1989
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Polk County Enterprise (Livingston, Tex.), Vol. 107, No. 83, Ed. 1 Sunday, October 15, 1989
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
October 15, 1989
Creator:
White, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 107, No. 5, Ed. 1 Sunday, January 15, 1989
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
January 15, 1989
Creator:
White, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 75, No. 132, Ed. 1 Wednesday, February 15, 1989
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 15, 1989
Creator:
Lake, Charles S.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
[Newspaper: The North Dallas News, Volume 3, Issue 4]
Pages from the North Dallas News about the 13th season of events for the Junior Black Academy of Arts and Letters featuring notable African Americans and their accomplishments.
Date:
September 15, 1989
Creator:
unknown
Object Type:
Newspaper
System:
The UNT Digital Library
The Optimist (Abilene, Tex.), Vol. 78, No. 7, Ed. 1, Friday, September 15, 1989
Bi-weekly student newspaper from Abilene Christian University in Abilene, Texas that includes local, state and campus news along with advertising.
Date:
September 15, 1989
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Chickasha Daily Express (Chickasha, Okla.), Vol. 97, No. 262, Ed. 1 Sunday, January 15, 1989
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 15, 1989
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History