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Low Mass Francium and Emanation Isotopes of High AlphaStability
Isotopes of francium with 126 or fewer neutrons have been looked for in bombardments of Th{sup 232} with 350 Mev protons from the 184-inch cyclotron. Fr{sup 212} with an apparent half-life of 19.3 minutes for branching decay by alpha emission (44%) to At{sup 208} and by orbital electron capture (56%) to Em{sup 212} has been found. Em{sup 212} is shown to be a 23-minute alpha-emitter. At{sup 208} decays primarily (99.5%) by orbital electron capture to Po{sup 208}, but shows 0.5% alpha-branching. The francium and emanation isotopes have alpha half-lives completely out of line with the predictions based on the previously known isotopes of these elements. Their high alpha stability is believed to be due to a closed shell of 126 neutrons in analogy to the behavior of elements 83-85. The non-existence of long-lived francium in nature is discussed in the terms of this and other recent work on francium isotopes.
Date:
October 10, 1949
Creator:
Hyde, E. K.; Ghiorso, A. & Seaborg, G. T.
Object Type:
Report
System:
The UNT Digital Library
The El Reno Daily Tribune (El Reno, Okla.), Vol. 58, No. 189, Ed. 1 Monday, October 10, 1949
Daily newspaper from El Reno, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 10, 1949
Creator:
Harle, Budge
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The El Reno Daily Tribune (El Reno, Okla.), Vol. 58, No. 87, Ed. 1 Friday, June 10, 1949
Daily newspaper from El Reno, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 10, 1949
Creator:
Harle, Budge
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The El Reno Daily Tribune (El Reno, Okla.), Vol. 57, No. 267, Ed. 1 Monday, January 10, 1949
Daily newspaper from El Reno, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 10, 1949
Creator:
Harle, Budge
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The El Reno Daily Tribune (El Reno, Okla.), Vol. 58, No. 138, Ed. 1 Wednesday, August 10, 1949
Daily newspaper from El Reno, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 10, 1949
Creator:
Harle, Budge
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Baylor County Banner (Seymour, Tex.), Vol. 54, No. 11, Ed. 1 Thursday, November 10, 1949
Weekly newspaper from Seymour, Texas that includes local, state, and national news along with advertising.
Date:
November 10, 1949
Creator:
Harrison, O. C.
Object Type:
Newspaper
System:
The Portal to Texas History
The Baylor County Banner (Seymour, Tex.), Vol. 53, No. 28, Ed. 1 Thursday, March 10, 1949
Weekly newspaper from Seymour, Texas that includes local, state, and national news along with advertising.
Date:
March 10, 1949
Creator:
Harrison, O. C.
Object Type:
Newspaper
System:
The Portal to Texas History
The Baylor County Banner (Seymour, Tex.), Vol. 53, No. 24, Ed. 1 Thursday, February 10, 1949
Weekly newspaper from Seymour, Texas that includes local, state, and national news along with advertising.
Date:
February 10, 1949
Creator:
Harrison, O. C.
Object Type:
Newspaper
System:
The Portal to Texas History
The Shamrock Texan (Shamrock, Tex.), Vol. 46, No. 28, Ed. 1 Thursday, November 10, 1949
Weekly newspaper from Shamrock, Texas that includes local, state, and national news along with advertising.
Date:
November 10, 1949
Creator:
Montgomery, Arval
Object Type:
Newspaper
System:
The Portal to Texas History
The Shamrock Texan (Shamrock, Tex.), Vol. 45, No. 41, Ed. 1 Thursday, February 10, 1949
Weekly newspaper from Shamrock, Texas that includes local, state, and national news along with advertising.
Date:
February 10, 1949
Creator:
Montgomery, Arval
Object Type:
Newspaper
System:
The Portal to Texas History
The Dublin Progress (Dublin, Tex.), Vol. 61 YEARS, No. 12, Ed. 1 Friday, June 10, 1949
Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.
Date:
June 10, 1949
Creator:
Perry, Francis E.
Object Type:
Newspaper
System:
The Portal to Texas History
The Shamrock Texan (Shamrock, Tex.), Vol. 45, No. 45, Ed. 1 Thursday, March 10, 1949
Weekly newspaper from Shamrock, Texas that includes local, state, and national news along with advertising.
Date:
March 10, 1949
Creator:
Montgomery, Arval
Object Type:
Newspaper
System:
The Portal to Texas History
The Denison Press (Denison, Tex.), Vol. 20, No. 49, Ed. 1 Friday, June 10, 1949
Weekly newspaper from Denison, Texas that includes local, state and national news along with advertising.
Date:
June 10, 1949
Creator:
Anderson, LeRoy M.
Object Type:
Newspaper
System:
The Portal to Texas History
The Bogata News (Bogata, Tex.), Vol. 38, No. 33, Ed. 1 Friday, June 10, 1949
Weekly newspaper from Bogata, Texas that includes local, state, and national news along with advertising.
Date:
June 10, 1949
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The McGregor Mirror and Herald-Observer (McGregor, Tex.), Vol. 61, No. 2, Ed. 1 Friday, June 10, 1949
Weekly newspaper from McGregor, Texas that includes local, state, and national news along with advertising.
Date:
June 10, 1949
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Fast Neutron Sensitivity of the CP Meter
Abstract: "The sensitivity to fast neutrons of a CP Meter ionization chamber of the type used for health physics beta and gamma survey measurements has been investigated."
Date:
June 10, 1949
Creator:
Baker, E. E.; Gydesen, F. R. & Whipple, G. H., Jr.
Object Type:
Report
System:
The UNT Digital Library
Polarographic Determination of Hexone
The following report describes polarographic methods that determine saturated aliphatic carbonyl compounds.
Date:
November 10, 1949
Creator:
Alkire, George J.
Object Type:
Report
System:
The UNT Digital Library
Radioactive contamination in the environs of the Hanford Works for the period July, August, September 1948
This report summarizes the radioactive contamination measured at the Hanford Works and vicinity for the quarter July, August, and September 1948. Topics discussed are: meteorology; airborne contamination and contamination of the Columbia River; vegetation; drinking water; and in Hanford Wastes.
Date:
March 10, 1949
Creator:
Singlevich, W.
Object Type:
Report
System:
The UNT Digital Library
The Caldwell News and The Burleson County Ledger (Caldwell, Tex.), Vol. 62, No. 45, Ed. 1 Friday, June 10, 1949
Weekly newspaper from Caldwell, Texas that includes local, state and national news along with extensive advertising.
Date:
June 10, 1949
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Bastrop Advertiser (Bastrop, Tex.), Vol. 97, No. 37, Ed. 1 Thursday, November 10, 1949
Weekly newspaper from Bastrop, Texas that includes local, state and national news along with extensive advertising.
Date:
November 10, 1949
Creator:
Standifer, Amy S.
Object Type:
Newspaper
System:
The Portal to Texas History
Bastrop Advertiser (Bastrop, Tex.), Vol. 96, No. 50, Ed. 1 Thursday, February 10, 1949
Weekly newspaper from Bastrop, Texas that includes local, state and national news along with extensive advertising.
Date:
February 10, 1949
Creator:
Standifer, Amy S.
Object Type:
Newspaper
System:
The Portal to Texas History
Bastrop Advertiser (Bastrop, Tex.), Vol. 97, No. 2, Ed. 1 Thursday, March 10, 1949
Weekly newspaper from Bastrop, Texas that includes local, state and national news along with extensive advertising.
Date:
March 10, 1949
Creator:
Standifer, Amy S.
Object Type:
Newspaper
System:
The Portal to Texas History
Sweetwater Reporter (Sweetwater, Tex.), Vol. 52, No. 111, Ed. 1 Tuesday, May 10, 1949
Daily newspaper from Sweetwater, Texas that includes local, state and national news along with advertising.
Date:
May 10, 1949
Creator:
Baker, Allen
Object Type:
Newspaper
System:
The Portal to Texas History
Sweetwater Reporter (Sweetwater, Tex.), Vol. 52, No. 138, Ed. 1 Friday, June 10, 1949
Daily newspaper from Sweetwater, Texas that includes local, state and national news along with advertising.
Date:
June 10, 1949
Creator:
Baker, Allen
Object Type:
Newspaper
System:
The Portal to Texas History