Gamma Disc Sources

NIST Traceable Calibration Standards

Gamma Standards—Type D Disc Sources

The type D configuration is mainly used for checking the performance of G.M. and NaI(Tl) detectors. The type D disk is a 1” (25.4 mm) diameter by 0.250” (6.35 mm) thick disk constructed of high strength plastic. The active diameter is 0.197” (5 mm).

Type D Gamma Source by Eckert and Ziegler

Catalog
Number
Nuclide
Half-Life Major Photon Emmissions (keV)
Available Activities
GF-241-D Americium-241 432.17 y 59.5 (36%), 11-20 (39.5%) Np L x-rays 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-124-D Antimony-124 60.20 d 602.7 (97.9%), 722.8 (10.9%), 1690.9 (47.6%) 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-125A-D Antimony-125 1007.7 d 428 (29.7%), 464 (10.5%), 601 (17.7%), 607 (5%), 636 (11.2%),
27-32 (75.1%) Te K x-rays
5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-133-D Barium-133 3862 d 80 (34.1%), 303 (18.3%), 356 (61.9%), 32-37 (53.2% )Cs K x-rays 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-007-D Beryllium-7 53.284 d 478 (10.3%) 25 nCi-500 μCi, 925 Bq-18.5 MBq
GF-207-D Bismuth-207 1.16 x 104 d 570 (97.7%), 1064 (74.5%), 9-15 (32.5%), Pb L x-rays, 72-88 (77.7%)
Pb K x-rays
5 nCi-100 μCi 185 Bq-3.7 MBq
GF-109-D Cadmium-109 462.6 d 88 (3.6% from Ag-109m), 22-26 (99.4%) Ag K x-rays 50 nCi-1 mCi, 1.85 kBq-37 MBq
GF-139-D Cerium-139 137.640 d 33.03 (22.8%), 33.4 (41.9%), 165.9 (79.9%), 33-39 (80%) La x-rays 5 nCi-10 µCi, 185 Bq-370 kBq
GF-141-D Cerium-141 -- info sent on request info sent on request
GF-134-D Cesium-134 754.28 d 563 (8.4%), 569 (15.4%), 605 (97.6%), 796 (85.4%) 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-137-D Cesium-137 30.17 y 662 (85.1% from Ba-137), 32-37 (7.2%) Ba K x-rays 5 nCi-1 mCi, 185 Bq-3.7 MBq
GF-051-D Chromium-51 27.706 d 320 (9.86%), 4.9-5.4 (22.8%) V K x-rays 25 nCi-500 μCi, 185 Bq-37 MBq
GF-056-D Cobalt-56 77.31 d 846.8 (99.9%), 1238 (66.1%), 1771 (15.5%), 2035 (7.8%), 2598 (17%),
3253 (7.6%), others up to 3452
10 nCi-100 μCi, 370 Bq-3.7 MBq
GF-057-D Cobalt-57 271.79 d 14 (9.2%), 122 (85.6%), 136.5 (10.7%), 6.4-7.1 (57.9%) Fe K x-rays 5 nCi-1 mCi, 185 Bq-37 MBq
GF-058-D Cobalt-58 70.86 d 810 (99.5%), 6.4-7.1 (26.7%) Fe K x-rays 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-060-D Cobalt-60 5.272 y 1173 (100%), 1333 (100%), 1173 (100%), 1333 (100%) 5 nCi-1 mCi, 185 Bq-37 MBq
GF-152-D Europium-152 4933 d 122-1408, 40-47 (74%) Sm +Gd x-rays 25 nCi-100 μCi 925 Bq-3.7 MBq
GF-154-D Europium-154 3136.8 d 123-1597, 42-50 (25.6%) Gd x-rays 25 nCi-100 μCi, 925 Bq-3.7 MBq
GF-155-D Europium-155 1770 d 87 (34%), 105 (20.6%), 42-50 (24.0%), Gd K x-rays 10 nCi-100 μCi, 370 Bq-3.7 MBq
GF-153-D Gadolinium-153 242 d 97 (29.5%), 103 (21.1%), 40-49 (122%) Eu K x-rays 5 nCi-1 mCi, 185 Bq-37 MBq
GF-068-D Germanium-68 270.8 d 511 (178%), 1077 (3.2%) from Ga-68, 9.2-10.4 (44.1%) Ga K x-rays,
8.6-9.6 (4.7%) Zn K x-rays
100 nCi-100 μCi, 3.7 kBq-3.7 MBq
GF-166-D Holmium-166m(1) 1200 y 81-1427, 48-58 (37.6%) Er K x-rays 10 nCi-10 µCi, 370 Bq-370 kBq
GF-125-D Iodine-125 59.43 d 35 (6.58%), 27-32 (139%) Te K x-rays 10 nCi-100 μCi, 370 Bq-3.7 MBq
GF-129-D Iodine-129 1.57 x 107 y 40 (7.5%), 29-35 (70.4%) Xe K x-rays 50 nCi-1 μCi, 1.85 kBq-37 kBq
GF-059-D Iron-59 44.51 d 1099 (56.3%), 1292 (43.7%) 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-054-D Manganese-54 312.3 d 835 (100%), 5.4-5.9 (25.6%) Cr K x-rays 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-203-D Mercury-203 46.595 d 279.2 (81.5%) 10 nCi-50 μCi, 370 Bq-1.85 MBq
GF-226-D Radium-226 1600 y 47-2448 (includes daughters) 50 nCi-10 μCi, 1.85 kBq-370 kBq
GF-106-D Ruthenium-106 1.020 y 512 (20.7%), 622 (9.8%) from Rh-106 25 nCi-100 μCi, 925 Bq-3.7 MBq
GF-046-D Scandium-46 83.79 d 889 (99.9%), 1121 (99.9%) 5 nCi-100 μCi 185 Bq-3.7 MBq
GF-075-D Selenium-75 119.64 d 121 (17.1%), 136 (58.8%), 265 (59%), 280 (25%), 10.5-12.0 (56.8%)
As K x-rays
5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-110-D Silver-110m 249.8 d 657.8 (94.4%), 884.6 (72.6%) 5 nCi-50 μCi, 185 Bq-1.85 MBq
GF-131-D Simulated I-131 ~5 y 356 (from Ba-133), 662 (from Cs-137/Ba-137) 50 nCi-100 μCi, 1.85 kBq-3.7 MBq
GF-022-D Sodium-22 950.8 d 511 (178%), 1275 (100%) 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-085-D Strontium-85 64.849 d 514 (98.4%), 13.3-15.3 (58.7%) Rb K x-rays 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-228-D Thorium-228 698.2 d 84-2614 (includes daughters) 10 nCi-10 μCi, 370 Bq-370 kBq
GF-113-D Tin-113 115.09 d 392 (64% from In-113 m), 24-28 (96.8%) In K x-rays 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-235-D Uranium-235(1) 7.037 x 108 y 143 (10.5%), 186(53%), 90-105 (10.8%) Th K x-rays 10 nCi-100 nCi, 370 Bq-3.7 kBq
GF-238U-D Uranium (Natural)(1) 4.468 x 109 y 26-2448 (includes daughters) 10 nCi-100 nCi, 370 Bq-3.7 kBq
GF-088-D Yttrium-88 106.630 d 898 (94%), 1836 (99.4%), 14.1-16.2 (61.6%) Sr K x-rays 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-065-D Zinc-65 244.26 d 1116 (50.6%), 8.0-8.9 (38.7%) Cu K x-rays 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-095-D Zirconium-95/Nb-95 64.02 d 724 (44.1%), 757 (54.5%) 10 nCi-50 μCi, 370 Bq-1.85 MBq

Gamma Sets—Type D

Catalog Number Activities Sets Consist Of
GF-290-0.1D 0.1 μCi, 3.7 kBq Ba-133, Cd-109, Co-57, Co-60, Cs-137, Mn-54 and Na-22
GF-290-1D 1 μCi, 37 kBq Ba-133, Cd-109, Co-57, Co-60, Cs-137, Mn-54 and Na-22
GF-290-10D 10 μCi, 370 kBq Ba-133, Cd-109, Co-57, Co-60, Cs-137, Mn-54 and Na-22

Gamma Standards—Type M Disc Sources

The type M thin “scatterless” disk is used in applications involving high resolution solid state detectors. The activity is deposited on 9 mg/cm2 aluminumized Mylar (polyester) disk, and covered with 0.9 mg/cm2 Kapton (polymide). The source is supplied in a removable aluminum holder. In the holder the source has an overall diameter of 1” (25.4 mm) and a thickness of 0.125” (3.18 mm). Out of the holder the source is 0.937” (23.8 mm) in diameter with a thickness of approximately 0.030” (0.76 mm). The active diameter is 0.12” (3 mm).

Type M Gamma Standards

Catalog
Number
Nuclide
Half-Life
Major Photon Emmissions (keV)
Available Activities
GF-241-M Americium-241 432.17 y 59.5(36%), 11-20(39.5%) Np L x-rays 5 nCi-10 µCi, 185 Bq-370 kBq
GF-124-M Antimony-124 60.20 d 602.7(97.9%), 722.8(10.9%), 1690.9(47.6%) 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-125A-M Antimony-125A 1007.7 d 428(29.7%), 464(10.5%), 601(17.7%), 607(5%), 636(11.2%),
27-32(75.1%) Te K x-rays
5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-133-M Barium-133 3862 d 80(34.1%), 303(18.3%), 356(61.9%), 32-37(53.2%) Cs K x-rays 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-007-M Beryllium-7 53.28 d 478(10.3%) 25 nCi-500 μCi, 925 Bq-18.5 MBq
GF-207-M Bismuth-207 1.16 x 104 d 570(97.7%), 1064(74.5%), 9-15(32.5%), Pb L x-rays, 72-88(77.7%)
Pb K x-rays
5 nCi-100 µCi, 185 Bq-3.7 MBq
GF-109-M Cadmium-109 462.6 d 88(3.6% from Ag-109 m), 22-26(99.4%) Ag K x-rays 50 nCi-100 µCi, 1.85 kBq-3.7 MBq
GF-139-M Cerium-139 137.640 d 33.03(22.8%), 33.4(41.9%), 165.9(79.9%), 33-39(80%) La x-rays 50nCi-1 µCi , 1.85 kBq-37 kBq
GF-141-M Cerium-141 32.5 d 36.0 (9.1%), 35.6 (5%), 145.4 (48.4%), 352.42 (17%), Pr x-rays On Request
GF-134-M Cesium-134 754.28 d 563(8.4%), 569(15.4%), 605(97.6%), 796(85.4%) 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-137-M Cesium-137 30.17 y 662(85.1% from Ba-137), 32-37(7.2%) Ba K x-rays 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-051-M Chromium-51 27.706 d 320(9.86%), 4.9-5.4(22.8%) V K x-rays 25 nCi-100 μCi, 925 Bq-3.7 MBq
GF-056-M Cobalt-56 77.31 d 846.8(99.9%), 1238(66.1%), 1771(15.5%), 2035(7.8%), 2598(17%),
3253(7.6%), others up to 3452
10 nCi-100 μCi, 370 Bq-3.7 MBq
GF-057-M Cobalt-57 271.79 d 14(9.2%), 122(85.6%), 136.5(10.7%), 6.4-7.1(57.9%) Fe K x-rays 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-058-M Cobalt-58 70.86 d 810(99.5%), 6.4-7.1(26.7%) Fe K x-rays 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-060-M Cobalt-60 5.272 y 1173(100%), 1333(100%) 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-152-M Europium-152 4933 d 122-1408, 40-47(74%) Sm +Gd x-rays 25 nCi-100 μCi, 925 Bq-3.7 MBq
GF-154-M Europium-154 3136.8 d 123-1597, 42-50(25.6%) Gd x-rays 25 nCi-100 μCi, 925 Bq-3.7 MBq
GF-155-M Europium-155 1770 d 87(34%), 105(20.6%), 42-50(24.0%), Gd K x-rays 10 nCi-100 μCi, 370 Bq-3.7 MBq
GF-153-M Gadolinium-153 242 d 97(29.5%), 103(21.1%), 40-49(122%) Eu K x-rays 10 nCi-100 μCi, 370 Bq-3.7 MBq
GF-068-M Germanium-68 270.8 d 511(178%), 1077(3.2%) from Ga-68, 9.2-10.4(44.1%) Ga K x-rays,
8.6-9.6(4.7%) Zn K x-rays
100 nCi-100 μCi, 3.7 kBq-3.7 MBq
GF-166-M Holmium-166m 1200 y 81-1427, 48-58(37.6%) Er K x-rays 10 nCi-1 μCi ,370 Bq-37 kBq
GF-055-M Iron-55 999 d 5.8-6.5(27.3%) Mn K x-rays 1 μCi-100 μCi ,37 kBq-3.7 MBq
GF-059-M Iron-59 44.51 d 1099(56.3%), 1292(43.7%) 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-054-M Manganese-54 312.3 d 835(100%), 5.4-5.9(25.6%) Cr K x-rays 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-203-M Mercury-203 46.595 d 279.2(81.5%) 10 nCi-10 µCi, 370 Bq-370 kBq
GF-046-M Scandium-46 83.79 d 889(99.9%), 1121(99.9%) 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-075-M Selenium-75 119.64 d 121(17.1%), 136(58.8%), 265(59%), 280(25%), 10.5-12.0(56.8%)
As K x-rays
5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-110-M Silver-110m 249.8 d 657.8(94.4%), 884.6(72.6%) 5 nCi-50 μCi, 185 Bq-1.85 MBq
GF-131-M Simulated I-131 ~5 y 356(from Ba-133), 662(from Cs-137/Ba-137) 50 nCi-100 μCi, 1.85 kBq-3.7 MBq
GF-022-M Sodium-22 950.8 d 511(178%), 1275(100%) 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-085-M Strontium-85 64.849 d 514(98.4%), 13.3-15.3(58.7%) Rb K x-rays 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-113-M Tin-113 115.09 d 392(64% from In-113 m), 24-28(96.8%) In K x-rays 5 nCi-10 µCi, 185 Bq-370 kBq
GF-088-M Yttrium-88 106.630 d 898(94%), 1836(99.4%), 14.1-16.2(61.6%) Sr K x-rays 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-065-M Zinc-65 244.26 d 1116(50.6%), 8.0-8.9(38.7%) Cu K x-rays 5 nCi-100 μCi, 185 Bq-3.7 MBq
GF-095-M Zirconium-95/Nb-95 64.02 d 724(44.1%), 757(54.5%) 10 nCi-50 μCi 370 Bq-1.85 MBq

 

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